According to the versions of the kernel packages installed, the EulerOS Virtualization for ARM 64 installation on the remote host is affected by the following vulnerabilities :

  - The hid_input_field() function in     'drivers/hid/hid-core.c' in the Linux kernel before 4.6     allows physically proximate attackers to obtain     sensitive information from kernel memory or cause a     denial of service (out-of-bounds read) by connecting a     device.(CVE-2016-7915i1/4%0

  - The Linux kernel, before version 4.14.2, is vulnerable     to a deadlock caused by     fs/ocfs2/file.c:ocfs2_setattr(), as the function does     not wait for DIO requests before locking the inode.
    This can be exploited by local users to cause a     subsequent denial of service.(CVE-2017-18204i1/4%0

  - The vmw_gb_surface_define_ioctl function (accessible     via DRM_IOCTL_VMW_GB_SURFACE_CREATE) in     drivers/gpu/drm/vmwgfx/vmwgfx_surface.c in the Linux     kernel through 4.11.4 defines a backup_handle variable     but does not give it an initial value. If one attempts     to create a GB surface, with a previously allocated DMA     buffer to be used as a backup buffer, the backup_handle     variable does not get written to and is then later     returned to user space, allowing local users to obtain     sensitive information from uninitialized kernel memory     via a crafted ioctl call.(CVE-2017-9605i1/4%0

  - Use-after-free vulnerability in the nfqnl_zcopy     function in net/netfilter/nfnetlink_queue_core.c in the     Linux kernel through 3.13.6 allows attackers to obtain     sensitive information from kernel memory by leveraging     the absence of a certain orphaning operation. NOTE: the     affected code was moved to the skb_zerocopy function in     net/core/skbuff.c before the vulnerability was     announced.(CVE-2014-2568i1/4%0

  - It was found that the Linux kernel's ISO file system     implementation did not correctly limit the traversal of     Rock Ridge extension Continuation Entries (CE). An     attacker with physical access to the system could use     this flaw to trigger an infinite loop in the kernel,     resulting in a denial of service.(CVE-2014-9420i1/4%0

  - An integer overflow vulnerability was found in the     ring_buffer_resize() calculations in which a privileged     user can adjust the size of the ringbuffer message     size. These calculations can create an issue where the     kernel memory allocator will not allocate the correct     count of pages yet expect them to be usable. This can     lead to the ftrace() output to appear to corrupt kernel     memory and possibly be used for privileged escalation     or more likely kernel panic.(CVE-2016-9754i1/4%0

  - A symlink size validation was missing in Linux kernels     built with UDF file system (CONFIG_UDF_FS) support,     allowing the corruption of kernel memory. An attacker     able to mount a corrupted/malicious UDF file system     image could cause the kernel to crash.(CVE-2014-9730i1/4%0

  - In was found that in the Linux kernel, in     vmw_surface_define_ioctl() function in     'drivers/gpu/drm/vmwgfx/vmwgfx_surface.c' file, a     'num_sizes' parameter is assigned a user-controlled     value which is not checked if it is zero. This is used     in a call to kmalloc() and later leads to dereferencing     ZERO_SIZE_PTR, which in turn leads to a GPF and     possibly to a kernel panic.(CVE-2017-7261i1/4%0

  - A race condition flaw was found in the way the Linux     kernel keys management subsystem performed key garbage     collection. A local attacker could attempt accessing a     key while it was being garbage collected, which would     cause the system to crash.(CVE-2014-9529i1/4%0

  - A flaw was found in the Linux kernel's implementation     of i8042 serial ports. An attacker could cause a kernel     panic if they are able to add and remove devices as the     module is loaded.(CVE-2017-18079i1/4%0

  - drivers/hid/hid-pl.c in the Human Interface Device     (HID) subsystem in the Linux kernel through 3.11, when     CONFIG_HID_PANTHERLORD is enabled, allows physically     proximate attackers to cause a denial of service     (heap-based out-of-bounds write) via a crafted     device.(CVE-2013-2892i1/4%0

  - The __clear_user function in     arch/arm64/lib/clear_user.S in the Linux kernel before     3.17.4 on the ARM64 platform allows local users to     cause a denial of service (system crash) by reading one     byte beyond a /dev/zero page boundary.(CVE-2014-7843i1/4%0

  - A divide-by-zero vulnerability was found in a way the     kernel processes TCP connections. The error can occur     if a connection starts another cwnd reduction phase by     setting tp-i1/4zprior_cwnd to the current cwnd (0) in     tcp_init_cwnd_reduction(). A remote, unauthenticated     attacker could use this flaw to crash the kernel     (denial of service).(CVE-2016-2070i1/4%0

  - The adjust_branches function in kernel/bpf/verifier.c     in the Linux kernel before 4.5 does not consider the     delta in the backward-jump case, which allows local     users to obtain sensitive information from kernel     memory by creating a packet filter and then loading     crafted BPF instructions.(CVE-2016-2383i1/4%0

  - System using the infiniband support module ib_srpt were     vulnerable to a denial of service by system crash by a     local attacker who is able to abort writes to a device     using this initiator.(CVE-2016-6327i1/4%0

  - A security flaw was found in the Linux kernel in the     mark_source_chains() function in     'net/ipv4/netfilter/ip_tables.c'. It is possible for a     user-supplied 'ipt_entry' structure to have a large     'next_offset' field. This field is not bounds checked     prior to writing to a counter value at the supplied     offset.(CVE-2016-3134i1/4%0

  - An out-of-bounds access issue was discovered in     yurex_read() in drivers/usb/misc/yurex.c in the Linux     kernel. A local attacker could use user access     read/writes with incorrect bounds checking in the yurex     USB driver to crash the kernel or potentially escalate     privileges.(CVE-2018-16276i1/4%0

  - drivers/media/v4l2-core/videobuf2-v4l2.c in the Linux     kernel before 4.5.3 allows local users to cause a     denial of service (kernel memory write operation) or     possibly have unspecified other impact via a crafted     number of planes in a VIDIOC_DQBUF ioctl     call.(CVE-2016-4568i1/4%0

  - The usb_serial_console_disconnect function in     drivers/usb/serial/console.c in the Linux kernel,     before 4.13.8, allows local users to cause a denial of     service (use-after-free and system crash) or possibly     have unspecified other impact via a crafted USB device,     related to disconnection and failed     setup.(CVE-2017-16525i1/4%0

  - The Linux kernel is vulnerable to a NULL pointer     dereference in the ext4/xattr.c:ext4_xattr_inode_hash()     function. An attacker could trick a legitimate user or     a privileged attacker could exploit this to cause a     NULL pointer dereference with a crafted ext4 image.
    (CVE-2018-1094)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

リモートの Ubuntu 14.04 LTS ホストには、USN-3422-1のアドバイザリに記載された複数の脆弱性の影響を受けるパッケージがインストールされています。

  -4.7.7より前のLinuxカーネル内のfs/aio.cのaio_mount関数が実行アクセスを正しく制限していないため、ローカルユーザーが、io_setupシステムコールを介して、意図されたSELinux W^Xポリシー制限をバイパスし、結果として権限を簡単に取得する可能性があります。（CVE-2016-10044）

  -4.8.14より前のLinux カーネルのL2TPv3 IPカプセル化機能の競合状態により、ローカルのユーザーが、ソケットにSOCK_ZAPPEDステータスがあるかどうかを適切に確認せずに複数のbindシステムコールを行うことにより、特権を取得したり、サービス拒否（メモリ解放後使用（Use After Free））を引き起こす可能性があります。これは、net/l2tp/l2tp_ip.cとnet/l2tp/l2tp_ip6.cに関連しています。（CVE-2016-10200）

  -4.8.2までのLinux カーネルのファイルシステム実装は、setxattr呼び出し中にsetgidビットを保持します。これにより、ローカルのユーザーが実行権限に制限のあるsetgidプログラムの存在を利用し、グループ権限を取得する可能性があります。（CVE-2016-7097）

  -4.8.11までのLinux カーネルのlib/mpi/mpi-pow.cのmpi_powm関数は、そのメモリがlimbデータに対して割り当てられているかを保証しません。そのため、はローカルユーザーが、ゼロ指数のRSAキーに対するadd_keyシステムコールを介して、サービス拒否（スタックメモリの破損やパニック）を引き起こす可能性があります。（CVE-2016-8650）

  - 4.8.11 までの Linux カーネルの drivers/vfio/pci/vfio_pci.c により、ローカルユーザーは、整数オーバーフローチェックをバイパスし、VFIO_DEVICE_SET_IRQS ioct l呼び出し用の vfio PCI デバイスファイルへのアクセス (別名ステートマシン混乱バグ) を利用して、サービス拒否 (メモリ破損) を引き起こしたり、詳細不明なその他の影響を与えたりする可能性があります。(CVE-2016-9083) 

  - 4.8.11 までの Linux カーネルの drivers/vfio/pci/vfio_pci_intrs.c では kzalloc 関数が誤って使用されているため、ローカルユーザーが、vfio PCI デバイスファイルへのアクセスを利用して、サービス拒否 (整数オーバーフロー) を引き起こしたり、詳細不明なその他の影響を与えたりする可能性があります。(CVE-2016-9084)

  -4.7.5より前のLinuxカーネルのarch/x86/include/asm/uaccess.hにある__get_user_asm_exマクロが特定の整数変数を初期化しません。これにより、ローカルユーザーがget_user_ex呼び出しの失敗を引き起こすことで、カーネルスタックメモリから機密情報を取得できる可能性があります。（CVE-2016-9178）

  - 4.8.11 までの Linux カーネル内の cgroup オフライン実装は、特定のドレイン操作を不適切に処理するため、ローカルユーザーが、細工されたアプリケーションを実行するためのコンテナ環境へのアクセスを利用することで、サービス拒否 (システムハングアップ) を引き起こす可能性があります。これは、trinity によって実証されています。(CVE-2016-9191)

  -4.11-rc8より前のLinux カーネルで、rootがセッションキーリングとして結合することで内部キーリング（RHEL-7の.dns_resolverや.builtin_trusted_keysアップストリームなど）に直接アクセスできることが判明しました。これにより、rootは、キーリングに独自に考案した新しい公開鍵を追加することでモジュール署名の検証をバイパスできます。（CVE-2016-9604）

  - 4.6.1 以前の Linux カーネルのプロファイルサブシステムにおける kernel/trace/ring_buffer.c の ring_buffer_resize 関数は、特定の整数計算を適切に処理せず、これによりローカルユーザーが /sys/kernel/debug/tracing/buffer_size_kb ファイルに書き込むことで権限を取得できる可能性があります。(CVE-2016-9754)

  -Linux カーネル（BlueZ）のネイティブBluetoothスタックは、Linux kernelバージョン2.6.32から4.13.1まで、L2CAP構成応答の処理中にスタックオーバーフローに対して脆弱であったため、カーネル空間でリモートコード実行が発生します。（CVE-2017-1000251）

  -4.9.9までのLinux カーネルのnet/ipv4/ip_sockglue.cにあるipv4_pktinfo_prepare関数により、攻撃者が（1）細工されたシステムコールを行うアプリケーション、または（2）無効なIPオプションによるIPv4トラフィックを介して、サービス拒否（システムクラッシュ）を引き起こす可能性があります。（CVE-2017-5970）

  -4.9.11より前のLinux カーネルのnet/ipv4/tcp.cにあるtcp_splice_read関数により、リモートの攻撃者がURGフラグを持つTCPパケットを含むベクトルを介して、サービス拒否（無限ループとソフトロックアップ）を引き起こす可能性があります。（CVE-2017-6214）

  - 4.9.13 より前の Linux カーネルの net/packet/af_packet.c の競合状態により、ローカルのユーザーが PACKET_FANOUT setsockopt システムコールを行うマルチスレッドアプリケーションを介して、サービス拒否 (メモリ解放後使用) を引き起こしたり、詳細不明な他の影響を与えたりする可能性があります。(CVE-2017-6346)

  -3.14.79までのLinux カーネル内のsecurity/keys/keyring.cのkeyring_search_aux関数により、ローカルユーザーが、「dead」タイプのrequest_keyシステムコールを介して、サービス拒否（NULLポインター逆参照とOOPS）を引き起こす可能性があります。（CVE-2017-6951）

  -4.10.4までのLinux カーネルのdrivers/scsi/sg.cのsg_ioctl関数により、ローカルユーザーが、SG_NEXT_CMD_LEN ioctlコールの大きなコマンドサイズを介して、サービス拒否（スタックベースのバッファオーバーフロー）や詳細不明なその他の影響を引き起こす可能性があり、sg_write関数での領域外書き込みのアクセスに至ります。（CVE-2017-7187）

  - 4.10.13 より前の Linux カーネルの KEYS サブシステムにより、ローカルユーザーが、一連の KEY_REQKEY_DEFL_THREAD_KEYRING keyctl_set_reqkey_keyring 呼び出しを介して、サービス拒否 (メモリ消費) を引き起こす可能性があります。
    (CVE-2017-7472)

  -4.12.3より前のLinux カーネルのdrivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.cのbrcmf_cfg80211_mgmt_tx関数により、ローカルユーザーは、細工されたNL80211_CMD_FRAME Netlinkパケットを介して、サービス拒否（バッファオーバーフローおよびシステムクラッシュ）を引き起こしたり、権限を取得したりする可能性があります。（CVE-2017-7541）

Nessus はこれらの問題をテストしておらず、代わりにアプリケーションが自己報告するバージョン番号にのみ依存していることに注意してください。

遠端 Ubuntu 14.04 LTS 主機上安裝的一個套件受到 USN-3422-1 公告中所提及的多個弱點影響。

  在 4.7.7 版之前的 Linux 核心中，fs/aio.c 的 aio_mount 函式不會正確限制執行存取權，這會讓本機使用者更容易透過 io_setup 系統呼叫，繞過預定的 SELinux W ^ X 原則限制，進而取得權限。(CVE-2016-10044)

  在 4.8.14 之前的 Linux 核心中，L2TPv3 IP Encapsulation 函式出現爭用情形，允許本機使用者藉由多次發出繫結系統呼叫卻未確實查證通訊端的狀態是否為 SOCK_ZAPPED 而獲得權限或造成拒絕服務 (釋放後使用)，此問題與 net/l2tp/l2tp_ip.c 和 net/l2tp/l2tp_ip6.c 有關。(CVE-2016-10200)

  在 Linux 核心 4.8.2 及之前的所有版本中，檔案系統實作會在 setxattr 呼叫時保留 setgid 位元，本機使用者可充分利用既有的 setgid 程式和執行權限限制獲得群組權限。(CVE-2016-7097)

  - 在 4.8.11 版之前的 Linux 核心中，lib/mpi/mpi-pow.c 的 mpi_powm 函式不會確保記憶體是為四邊資料配置的，這會允許本機使用者透過對具有零指數之 RSA 金鑰的 add_key 系統呼叫，引致拒絕服務 (堆疊記憶體損毀和不穩定) 。CVE-2016-8650

  - 在 4.8.11 及之前版本的 Linux 核心中，drivers/vfio/pci/vfio_pci.c 允許本機使用者利用 vfio PCI 裝置檔案的存取權發出 VFIO_DEVICE_SET_IRQS ioctl 呼叫，繞過整數溢位檢查，並引致拒絕服務 (記憶體損毀) 或造成其他不明影響，亦即狀態機器混淆錯誤。(CVE-2016-9083)

  - 在 4.8.11 及之前版本的 Linux 核心中，drivers/vfio/pci/vfio_pci_intrs.c 會誤用 kzalloc 函式，進而允許本機使用者利用 vfio PCI 裝置檔案的存取權，引致拒絕服務 (整數溢位) 或造成其他不明影響。(CVE-2016-9084)

  在 4.7.5 之前的 Linux 核心中，arch/x86/include/asm/uaccess.h 的 __get_user_asm_ex 巨集未初始化特定整數變數，進而允許本機使用者透過觸發 get_user_ex 呼叫失敗，從核心堆疊記憶體取得敏感資訊。(CVE-2016-9178)

  在 4.8.11  版之前的 Linux 核心中，cgroup 離線實作未正確處理某些排出作業，進而允許本機使用者利用容器環境的存取權來執行特製應用程式，進而引致拒絕服務 (系統懸置)，trinity 即為一例。(CVE-2016-9191)

  據發現，root 可取得直接存取內部 keyring 的權限，如 RHEL-7 或「.builtin_trusted_keys」上游中的「dns_resolver」，方法是將之作為其工作階段 keyring 加入。root 可藉此將自有 devising 的新公開金鑰新增到 keyring 中，進而繞過模組簽名驗證。(CVE-2016-9604)

  - 在 Linux 核心 4.6.1 之前版本中，分析子系統中 kernel/trace/ring_buffer.c 的 ring_buffer_resize 函式未正確處理特定的整數計算，這讓本機使用者可以透過寫入 /sys/kernel/debug/tracing/buffer_size_kb 檔案來取得特權。(CVE-2016-9754)

  自 Linux 內核 2.6.32 版開始至更高版本 (包括 4.13.1)，Linux 內核 (BlueZ) 的原生藍牙堆疊在處理 L2CAP 配置響應時容易受到堆棧溢出弱點的影響，從而導致內核空間執行遠端程式碼。(CVE-2017-1000251)

  在 4.9.9 之前的 Linux 核心中，net/ipv4/ip_sockglue.c 所用的 ipv4_pktinfo_prepare 函式允許攻擊者透過 (1) 進行特製系統呼叫的應用程式，也可能透過 (2) IP 選項無效的 IPv4 傳輸，造成拒絕服務 (系統當機)。(CVE-2017-5970)

  - 在 4.9.11 之前的 Linux 核心中，net/ipv4/tcp.c 所用的 tcp_splice_read 函式允許遠端攻擊者透過具 URG 旗標之 TCP 封包的向量，造成拒絕服務 (無限迴圈和軟式鎖定)。(CVE-2017-6214)

  - 在 4.9.13 之前的 Linux 核心中，net/packet/af_packet.c 內出現爭用情形，此情形允許本機使用者透過發出 PACKET_FANOUT setsockopt 系統呼叫的多執行緒應用程式，造成拒絕服務 (釋放後使用)，也可能造成其他不明影響。(CVE-2017-6346)

  在 3.14.79 及之前版本的 Linux 核心中，security/keys/keyring.c 的 keyring_search_aux 函式允許本機使用者透過對無作用類型的 request_key 系統呼叫，引致拒絕服務 (NULL 指標解除參照和 OOPS)。(CVE-2017-6951)

  在 4.10.4 及之前版本的 Linux 核心中，drivers/scsi/sg.c 的 sg_ioctl 函式可讓本機使用者透過 SG_NEXT_CMD_LEN ioctl 呼叫中的大型命令大小，引致拒絕服務 (堆疊型緩衝區溢位) 或可能造成其他不明影響，進而導致 sg_write 函式中的超出邊界寫入存取。(CVE-2017-7187)

  - 在 4.10.13 版之前的 Linux 核心中，KEYS 子系統允許本機使用者透過一系列 KEY_REQKEY_DEFL_THREAD_KEYRING keyctl_set_reqkey_keyring 呼叫，引致拒絕服務 (記憶體消耗)。
    (CVE-2017-7472)

  在 4.12.3 之前的 Linux 核心中，drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c 的 brcmf_cfg80211_mgmt_tx 函式允許本機使用者透過特製 NL80211_CMD_FRAME Netlink 封包，引致拒絕服務 (緩衝區溢位和系統當機) 或可能取得權限。(CVE-2017-7541)

請注意，Nessus 並未測試這些問題，而是僅依據應用程式自我報告的版本號碼作出判斷。

远程 Ubuntu 14.04 LTS 主机上安装的一个程序包受到 USN-3422-1 公告中提及的多个漏洞影响。

  - 在低于 4.7.7 的 Linux 内核版本中，fs/aio.c 中的 aio_mount 函数未正确限制执行访问权，这使本地用户更容易通过 io_setup 系统调用，绕过预期 SELinux W^X 策略限制，并因此获取权限。(CVE-2016-10044)

  - 在低于 4.8.14 的 Linux 内核版本中，L2TPv3 IP 封装功能中存在争用条件，本地用户可利用此漏洞，在未正确确定套接字是否具有 SOCK_ZAPPED 状态的情况下，通过执行多次 bind 系统调用，获取权限，或造成拒绝服务（释放后使用），此问题与 net/l2tp/l2tp_ip.c 和 net/l2tp/l2tp_ip6.c 相关。(CVE-2016-10200)

  - 在 Linux 内核 4.8.2 及之前版本中，文件系统实现在 setxattr 调用过程中保留了 setgid 位，本地用户可利用此漏洞，通过使用存在的具有执行权限限制的 setgid 程序，获取群组权限。(CVE-2016-7097)

  - 在 4.8.11 及之前的 Linux 内核中，lib/mpi/mpi-pow.c 的 mpi_powm 函数未确保为碎片数据分配内存，这允许本地用户通过具有零指数的 RSA 密钥的 add_key 系统调用造成拒绝服务（堆栈内存损坏和错误）。(CVE-2016-8650)

  - 在 4.8.11 及之前的 Linux 内核中，drivers/vfio/pci/vfio_pci.c 允许本地用户通过利用对 VFIO_DEVICE_SET_IRQS ioctl 调用的 vfio PCI 设备的访问权限（亦称状态机混淆缺陷）绕过整数溢出检查，并造成拒绝服务（内存损坏）或其他不明影响。(CVE-2016-9083)

  - 在 4.8.11 及之前的 Linux 内核的 drivers/vfio/pci/vfio_pci_intrs.c 滥用 kzalloc 函数，这允许本地用户通过利用对 vfio PCI 设备文件的访问权限造成拒绝服务（整数溢出）或其他不明影响。(CVE-2016-9084)

  - 在低于 4.7.5 的 Linux 内核版本中，arch/x86/include/asm/uaccess.h 中的 __get_user_asm_ex 宏未初始化某个整数变量，本地用户可利用此漏洞，通过触发 get_user_ex 调用失败，从内核堆栈内存获取敏感信息。(CVE-2016-9178)

  - 在 Linux 内核 4.8.11 及之前版本中，cgroup 离线实现未正确处理某些耗尽操作，本地用户可利用此漏洞，通过访问执行构建应用程序的容器环境，造成拒绝服务（系统挂起），trinity 即为一例。(CVE-2016-9191)

  - 在低于 4.11-rc8 的 Linux 内核版本中发现漏洞，根用户通过以会话密钥环形式加入内部密钥环，即可获取内部密钥环的直接访问权限，如 RHEL-7 或“.builtin_trusted_keys”上游中的“.dns_resolver”。根用户可利用此漏洞，通过在密钥环中添加自设计的新公钥，绕过模块签名验证。(CVE-2016-9604)

  - 在 4.6.1 之前的 Linux 内核中，配置子系统中的 kernel/trace/ring_buffer.c 的 ring_buffer_resize 函数未正确处理某些整数计算，导致本地用户可以通过写入 /sys/kernel/debug/tracing/buffer_size_kb 文件来获取权限。(CVE-2016-9754)

  - 在 Linux 内核 2.6.32 至 4.13.1（包括）版本中，Linux 内核 (BlueZ) 中的本地蓝牙堆栈在处理 L2CAP 配置响应时，容易受到堆栈溢出漏洞的影响，从而导致在内核空间中执行远程代码。(CVE-2017-1000251)

  - 在 Linux 内核 4.9.9 及之前版本中，攻击者可利用 net/ipv4/ip_sockglue.c 中的 ipv4_pktinfo_prepare 函数，通过 (1) 调用构建系统的应用程序或可能通过 (2) IP 选项无效的 IPv4 流量，造成拒绝服务（系统崩溃）。(CVE-2017-5970)

  - 在低于 4.9.11 的 Linux 内核版本中，远程攻击者可利用 net/ipv4/tcp.c 中的 tcp_splice_read 函数，通过涉及带有 URG 标记的 TCP 数据包的向量，造成拒绝服务（无限循环和软锁定）。(CVE-2017-6214)

  - 在 4.9.13 之前的 Linux 内核中，net/packet/af_packet.c 内存在争用条件，这使得本地用户能够通过进行 PACKET_FANOUT setsockopt 系统调用的多线程应用程序，从而造成拒绝服务（释放后使用），或者可能造成其他不明影响。(CVE-2017-6346)

  - 在 3.14.79 及之前的 Linux 内核中，security/keys/keyring.c 的 keyring_search_aux 函数允许本地用户通过死类型的 request_key 系统调用造成拒绝服务（空指针取消引用和 OOPS）。(CVE-2017-6951)

  - 在 Linux 内核 4.10.4 及之前版本中，本地用户可利用 drivers/scsi/sg.c 中的 sg_ioctl 函数，通过 SG_NEXT_CMD_LEN ioctl 调用中的大型命令，造成拒绝服务（基于堆栈的缓冲区溢出），或可能造成其他不明影响，进而导致 sg_write 函数存在越界写入访问漏洞。(CVE-2017-7187)

  - 在低于 4.10.13 的 Linux 内核版本中，本地用户可利用 KEYS 子系统，通过一系列 KEY_REQKEY_DEFL_THREAD_KEYRING keyctl_set_reqkey_keyring 调用，造成拒绝服务（内存消耗）。
    (CVE-2017-7472)

  - 在低于 4.12.3 的 Linux 内核版本中，本地用户可利用 drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c 中的 brcmf_cfg80211_mgmt_tx 函数，通过构建的 NL80211_CMD_FRAME Netlink 数据包，造成拒绝服务（缓冲区溢出和系统崩溃），或可能获取权限。(CVE-2017-7541)

请注意，Nessus 尚未测试这些问题，而是只依据应用程序自我报告的版本号进行判断。

An update of the linux package has been released.

According to the versions of the kernel packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities :

  - An integer overflow vulnerability was found in the     ring_buffer_resize() calculations in which a privileged     user can adjust the size of the ringbuffer message     size. These calculations can create an issue where the     kernel memory allocator will not allocate the correct     count of pages yet expect them to be usable. This can     lead to the ftrace() output to appear to corrupt kernel     memory and possibly be used for privileged escalation     or more likely kernel panic.(CVE-2016-9754)

  - A flaw was found in the Linux kernel's implementation     of setsockopt for the SO_{SND|RCV}BUFFORCE setsockopt()     system call. Users with non-namespace CAP_NET_ADMIN are     able to trigger this call and create a situation in     which the sockets sendbuff data size could be negative.
    This could adversely affect memory allocations and     create situations where the system could crash or cause     memory corruption.(CVE-2016-9793)

  - A use-after-free vulnerability was found in ALSA pcm     layer, which allows local users to cause a denial of     service, memory corruption, or possibly other     unspecified impact. Due to the nature of the flaw,     privilege escalation cannot be fully ruled out,     although we believe it is unlikely.(CVE-2016-9794)

  - A double free vulnerability was found in netlink_dump,     which could cause a denial of service or possibly other     unspecified impact. Due to the nature of the flaw,     privilege escalation cannot be fully ruled out,     although we believe it is unlikely.(CVE-2016-9806)

  - A race condition issue leading to a use-after-free flaw     was found in the way the raw packet sockets are     implemented in the Linux kernel networking subsystem     handling synchronization. A local user able to open a     raw packet socket (requires the CAP_NET_RAW capability)     can use this issue to crash the     system.(CVE-2017-1000111)

  - An exploitable memory corruption flaw was found in the     Linux kernel. The append path can be erroneously     switched from UFO to non-UFO in ip_ufo_append_data()     when building an UFO packet with MSG_MORE option. If     unprivileged user namespaces are available, this flaw     can be exploited to gain root     privileges.(CVE-2017-1000112)

  - A stack buffer overflow flaw was found in the way the     Bluetooth subsystem of the Linux kernel processed     pending L2CAP configuration responses from a client. On     systems with the stack protection feature enabled in     the kernel (CONFIG_CC_STACKPROTECTOR=y, which is     enabled on all architectures other than s390x and     ppc64le), an unauthenticated attacker able to initiate     a connection to a system via Bluetooth could use this     flaw to crash the system. Due to the nature of the     stack protection feature, code execution cannot be     fully ruled out, although we believe it is unlikely. On     systems without the stack protection feature (ppc64le     the Bluetooth modules are not built on s390x), an     unauthenticated attacker able to initiate a connection     to a system via Bluetooth could use this flaw to     remotely execute arbitrary code on the system with ring     0 (kernel) privileges.(CVE-2017-1000251)

  - A reachable assertion failure flaw was found in the     Linux kernel built with KVM virtualisation(CONFIG_KVM)     support with Virtual Function I/O feature (CONFIG_VFIO)     enabled. This failure could occur if a malicious guest     device sent a virtual interrupt (guest IRQ) with a     larger (i1/4z1024) index value.(CVE-2017-1000252)

  - A flaw was found in the way memory was being allocated     on the stack for user space binaries. If heap (or     different memory region) and stack memory regions were     adjacent to each other, an attacker could use this flaw     to jump over the stack guard gap, cause controlled     memory corruption on process stack or the adjacent     memory region, and thus increase their privileges on     the system. This is a kernel-side mitigation which     increases the stack guard gap size from one page to 1     MiB to make successful exploitation of this issue more     difficult.(CVE-2017-1000364)

  - The Linux Kernel imposes a size restriction on the     arguments and environmental strings passed through     RLIMIT_STACK/RLIMIT_INFINITY, but does not take the     argument and environment pointers into account, which     allows attackers to bypass this     limitation.(CVE-2017-1000365)

  - The offset2lib patch as used in the Linux Kernel     contains a vulnerability that allows a PIE binary to be     execve()'ed with 1GB of arguments or environmental     strings then the stack occupies the address 0x80000000     and the PIE binary is mapped above 0x40000000     nullifying the protection of the offset2lib patch. This     affects Linux Kernel version 4.11.5 and earlier. This     is a different issue than CVE-2017-1000371. This issue     appears to be limited to i386 based     systems.(CVE-2017-1000370)

  - A flaw was found in the processing of incoming L2CAP     bluetooth commands. Uninitialized stack variables can     be sent to an attacker leaking data in kernel address     space.(CVE-2017-1000410)

  - A race condition was found in the Linux kernel before     version 4.11-rc1 in 'fs/timerfd.c' file which allows a     local user to cause a kernel list corruption or     use-after-free via simultaneous operations with a file     descriptor which leverage improper 'might_cancel'     queuing. An unprivileged local user could use this flaw     to cause a denial of service of the system. Due to the     nature of the flaw, privilege escalation cannot be     fully ruled out, although we believe it is     unlikely.(CVE-2017-10661)

  - Memory leak in the virtio_gpu_object_create function in     drivers/gpu/drm/virtio/virtgpu_object.c in the Linux     kernel through 4.11.8 allows attackers to cause a     denial of service (memory consumption) by triggering     object-initialization failures.(CVE-2017-10810)

  - The make_response function in     drivers/block/xen-blkback/blkback.c in the Linux kernel     before 4.11.8 allows guest OS users to obtain sensitive     information from host OS (or other guest OS) kernel     memory by leveraging the copying of uninitialized     padding fields in Xen block-interface response     structures, aka XSA-216.(CVE-2017-10911)

  - A use-after-free flaw was found in the Netlink     functionality of the Linux kernel networking subsystem.
    Due to the insufficient cleanup in the mq_notify     function, a local attacker could potentially use this     flaw to escalate their privileges on the     system.(CVE-2017-11176)

  - Buffer overflow in the mp_override_legacy_irq()     function in arch/x86/kernel/acpi/boot.c in the Linux     kernel through 4.12.2 allows local users to gain     privileges via a crafted ACPI table.(CVE-2017-11473)

  - The xfrm_migrate() function in the     net/xfrm/xfrm_policy.c file in the Linux kernel built     with CONFIG_XFRM_MIGRATE does not verify if the dir     parameter is less than XFRM_POLICY_MAX. This allows a     local attacker to cause a denial of service     (out-of-bounds access) or possibly have unspecified     other impact by sending a XFRM_MSG_MIGRATE netlink     message. This flaw is present in the Linux kernel since     an introduction of XFRM_MSG_MIGRATE in 2.6.21-rc1, up     to 4.13-rc3.(CVE-2017-11600)

  - A security flaw was discovered in     nl80211_set_rekey_data() function in the Linux kernel     since v3.1-rc1 through v4.13. This function does not     check whether the required attributes are present in a     netlink request. This request can be issued by a user     with CAP_NET_ADMIN privilege and may result in NULL     dereference and a system crash.(CVE-2017-12153)

  - Linux kernel built with the KVM visualization support     (CONFIG_KVM), with nested visualization (nVMX) feature     enabled (nested=1), is vulnerable to a crash due to     disabled external interrupts. As L2 guest could access     (r/w) hardware CR8 register of the host(L0). In a     nested visualization setup, L2 guest user could use     this flaw to potentially crash the host(L0) resulting     in DoS.(CVE-2017-12154)

  - The Linux kernel built with the KVM visualization     support (CONFIG_KVM), with nested visualization(nVMX)     feature enabled (nested=1), was vulnerable to a stack     buffer overflow issue. The vulnerability could occur     while traversing guest page table entries to resolve     guest virtual address(gva). An L1 guest could use this     flaw to crash the host kernel resulting in denial of     service (DoS) or potentially execute arbitrary code on     the host to gain privileges on the     system.(CVE-2017-12188)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The remote Ubuntu 14.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-3422-1 advisory.

  - The aio_mount function in fs/aio.c in the Linux kernel before 4.7.7 does not properly restrict execute     access, which makes it easier for local users to bypass intended SELinux W^X policy restrictions, and     consequently gain privileges, via an io_setup system call. (CVE-2016-10044)

  - Race condition in the L2TPv3 IP Encapsulation feature in the Linux kernel before 4.8.14 allows local users     to gain privileges or cause a denial of service (use-after-free) by making multiple bind system calls     without properly ascertaining whether a socket has the SOCK_ZAPPED status, related to net/l2tp/l2tp_ip.c     and net/l2tp/l2tp_ip6.c. (CVE-2016-10200)

  - The filesystem implementation in the Linux kernel through 4.8.2 preserves the setgid bit during a setxattr     call, which allows local users to gain group privileges by leveraging the existence of a setgid program     with restrictions on execute permissions. (CVE-2016-7097)

  - The mpi_powm function in lib/mpi/mpi-pow.c in the Linux kernel through 4.8.11 does not ensure that memory     is allocated for limb data, which allows local users to cause a denial of service (stack memory corruption     and panic) via an add_key system call for an RSA key with a zero exponent. (CVE-2016-8650)

  - drivers/vfio/pci/vfio_pci.c in the Linux kernel through 4.8.11 allows local users to bypass integer     overflow checks, and cause a denial of service (memory corruption) or have unspecified other impact, by     leveraging access to a vfio PCI device file for a VFIO_DEVICE_SET_IRQS ioctl call, aka a state machine     confusion bug. (CVE-2016-9083)

  - drivers/vfio/pci/vfio_pci_intrs.c in the Linux kernel through 4.8.11 misuses the kzalloc function, which     allows local users to cause a denial of service (integer overflow) or have unspecified other impact by     leveraging access to a vfio PCI device file. (CVE-2016-9084)

  - The __get_user_asm_ex macro in arch/x86/include/asm/uaccess.h in the Linux kernel before 4.7.5 does not     initialize a certain integer variable, which allows local users to obtain sensitive information from     kernel stack memory by triggering failure of a get_user_ex call. (CVE-2016-9178)

  - The cgroup offline implementation in the Linux kernel through 4.8.11 mishandles certain drain operations,     which allows local users to cause a denial of service (system hang) by leveraging access to a container     environment for executing a crafted application, as demonstrated by trinity. (CVE-2016-9191)

  - It was discovered in the Linux kernel before 4.11-rc8 that root can gain direct access to an internal     keyring, such as '.dns_resolver' in RHEL-7 or '.builtin_trusted_keys' upstream, by joining it as its     session keyring. This allows root to bypass module signature verification by adding a new public key of     its own devising to the keyring. (CVE-2016-9604)

  - The ring_buffer_resize function in kernel/trace/ring_buffer.c in the profiling subsystem in the Linux     kernel before 4.6.1 mishandles certain integer calculations, which allows local users to gain privileges     by writing to the /sys/kernel/debug/tracing/buffer_size_kb file. (CVE-2016-9754)

  - The native Bluetooth stack in the Linux Kernel (BlueZ), starting at the Linux kernel version 2.6.32 and up     to and including 4.13.1, are vulnerable to a stack overflow vulnerability in the processing of L2CAP     configuration responses resulting in Remote code execution in kernel space. (CVE-2017-1000251)

  - The ipv4_pktinfo_prepare function in net/ipv4/ip_sockglue.c in the Linux kernel through 4.9.9 allows     attackers to cause a denial of service (system crash) via (1) an application that makes crafted system     calls or possibly (2) IPv4 traffic with invalid IP options. (CVE-2017-5970)

  - The tcp_splice_read function in net/ipv4/tcp.c in the Linux kernel before 4.9.11 allows remote attackers     to cause a denial of service (infinite loop and soft lockup) via vectors involving a TCP packet with the     URG flag. (CVE-2017-6214)

  - Race condition in net/packet/af_packet.c in the Linux kernel before 4.9.13 allows local users to cause a     denial of service (use-after-free) or possibly have unspecified other impact via a multithreaded     application that makes PACKET_FANOUT setsockopt system calls. (CVE-2017-6346)

  - The keyring_search_aux function in security/keys/keyring.c in the Linux kernel through 3.14.79 allows     local users to cause a denial of service (NULL pointer dereference and OOPS) via a request_key system call     for the dead type. (CVE-2017-6951)

  - The sg_ioctl function in drivers/scsi/sg.c in the Linux kernel through 4.10.4 allows local users to cause     a denial of service (stack-based buffer overflow) or possibly have unspecified other impact via a large     command size in an SG_NEXT_CMD_LEN ioctl call, leading to out-of-bounds write access in the sg_write     function. (CVE-2017-7187)

  - The KEYS subsystem in the Linux kernel before 4.10.13 allows local users to cause a denial of service     (memory consumption) via a series of KEY_REQKEY_DEFL_THREAD_KEYRING keyctl_set_reqkey_keyring calls.
    (CVE-2017-7472)

  - The brcmf_cfg80211_mgmt_tx function in drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c in the     Linux kernel before 4.12.3 allows local users to cause a denial of service (buffer overflow and system     crash) or possibly gain privileges via a crafted NL80211_CMD_FRAME Netlink packet. (CVE-2017-7541)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	名稱	產品	系列	已發布	已更新	嚴重性
124796	EulerOS Virtualization for ARM 64 3.0.1.0 : kernel (EulerOS-SA-2019-1472)	Nessus	Huawei Local Security Checks	2019/5/13	2022/5/20	high
103326	Ubuntu 14.04 LTS : Linux カーネル脆弱性 (USN-3422-1)	Nessus	Ubuntu Local Security Checks	2017/9/19	2024/1/9	high
103326	Ubuntu 14.04 LTS：Linux 核心弱點 (USN-3422-1)	Nessus	Ubuntu Local Security Checks	2017/9/19	2024/1/9	high
103326	Ubuntu 14.04 LTS：Linux 内核漏洞 (USN-3422-1)	Nessus	Ubuntu Local Security Checks	2017/9/19	2024/1/9	high
121664	Photon OS 1.0: Linux PHSA-2017-0001	Nessus	PhotonOS Local Security Checks	2019/2/7	2024/7/22	high
124821	EulerOS Virtualization 3.0.1.0 : kernel (EulerOS-SA-2019-1498)	Nessus	Huawei Local Security Checks	2019/5/13	2021/1/6	high
103326	Ubuntu 14.04 LTS : Linux kernel vulnerabilities (USN-3422-1)	Nessus	Ubuntu Local Security Checks	2017/9/19	2024/1/9	high

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