The remote OracleVM system is missing necessary patches to address critical security updates :

  - mm, thp: Do not make page table dirty unconditionally in     follow_trans_huge_pmd (Kirill A. Shutemov) [Orabug:
    27200879] (CVE-2017-1000405)

  - NFS: Add static NFS I/O tracepoints (Chuck Lever)

  - storvsc: don't assume SG list is contiguous (Aruna     Ramakrishna) 

  - fix unbalanced page refcounting in bio_map_user_iov     (Vitaly Mayatskikh) [Orabug: 27069038] (CVE-2017-12190)

  - more bio_map_user_iov leak fixes (Al Viro) [Orabug:
    27069038] (CVE-2017-12190)

  - packet: in packet_do_bind, test fanout with bind_lock     held (Willem de Bruijn) [Orabug: 27069065]     (CVE-2017-15649)

  - packet: hold bind lock when rebinding to fanout hook     (Willem de Bruijn) [Orabug: 27069065] (CVE-2017-15649)

  - net: convert packet_fanout.sk_ref from atomic_t to     refcount_t (Reshetova, Elena) [Orabug: 27069065]     (CVE-2017-15649)

  - packet: fix races in fanout_add (Eric Dumazet) [Orabug:
    27069065] (CVE-2017-15649)

  - refcount_t: Introduce a special purpose refcount type     (Peter Zijlstra) [Orabug: 27069065] (CVE-2017-15649)

  - locking/atomics: Add _[acquire|release|relaxed] variants     of some atomic operations (Will Deacon) [Orabug:
    27069065] (CVE-2017-15649)

  - net: qmi_wwan: fix divide by 0 on bad descriptors     (Bj&oslash rn Mork) [Orabug: 27215225] (CVE-2017-16650)

  - ALSA: usb-audio: Kill stray URB at exiting (Takashi     Iwai) [Orabug: 27148276] (CVE-2017-16527)

  - scsi: Add STARGET_CREATED_REMOVE state to     scsi_target_state (Ewan D. Milne) [Orabug: 27187217]

  - ocfs2: fix posix_acl_create deadlock (Junxiao Bi)     [Orabug: 27126129]

  - scsi: Don't abort scsi_scan due to unexpected response     (John Sobecki) 

  - ocfs2: code clean up for direct io (Ryan Ding)

  - xscore: add dma address check (Zhu Yanjun) [Orabug:
    27076919]

  - KVM: nVMX: Fix loss of L2's NMI blocking state (Wanpeng     Li) [Orabug: 27062498]

  - KVM: nVMX: track NMI blocking state separately for each     VMCS (Paolo Bonzini) [Orabug: 27062498]

  - KVM: VMX: require virtual NMI support (Paolo Bonzini)     [Orabug: 27062498]

  - KVM: nVMX: Fix the NMI IDT-vectoring handling (Wanpeng     Li) [Orabug: 27062498]

  - uek-rpm: disable CONFIG_NUMA_BALANCING_DEFAULT_ENABLED     (Fred Herard) 

  - thp: run vma_adjust_trans_huge outside i_mmap_rwsem     (Kirill A. Shutemov) [Orabug: 27026180]

  - selinux: fix off-by-one in setprocattr (Stephen Smalley)     [Orabug: 27001717] (CVE-2017-2618) (CVE-2017-2618)     (CVE-2017-2618)

  - sysctl: Drop reference added by grab_header in     proc_sys_readdir (Zhou Chengming) [Orabug: 27036903]     (CVE-2016-9191) (CVE-2016-9191) (CVE-2016-9191)

  - KEYS: prevent KEYCTL_READ on negative key (Eric Biggers)     [Orabug: 27050248] (CVE-2017-12192)

  - IB/ipoib: For sendonly join free the multicast group on     leave (Christoph Lameter) [Orabug: 27077718]

  - IB/ipoib: increase the max mcast backlog queue (Doug     Ledford) 

  - IB/ipoib: Make sendonly multicast joins create the mcast     group (Doug Ledford) [Orabug: 27077718]

  - IB/ipoib: Expire sendonly multicast joins (Christoph     Lameter) 

  - IB/ipoib: Suppress warning for send only join failures     (Jason Gunthorpe) [Orabug: 27077718]

  - IB/ipoib: Clean up send-only multicast joins (Doug     Ledford) [Orabug: 27077718]

  - netlink: allow to listen 'all' netns (Nicolas Dichtel)     [Orabug: 27077944]

  - netlink: rename private flags and states (Nicolas     Dichtel) [Orabug: 27077944]

  - netns: use a spin_lock to protect nsid management     (Nicolas Dichtel) 

  - netns: notify new nsid outside __peernet2id (Nicolas     Dichtel) 

  - netns: rename peernet2id to peernet2id_alloc (Nicolas     Dichtel) 

  - netns: always provide the id to rtnl_net_fill (Nicolas     Dichtel) 

  - netns: returns always an id in __peernet2id (Nicolas     Dichtel) 

  - Hang/soft lockup in d_invalidate with simultaneous calls     (Al Viro) 

  - Revert 'drivers/char/mem.c: deny access in open     operation when securelevel is set' (Brian Maly) [Orabug:
    27037811]

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2018:0654 advisory.

    The kernel-alt packages provide the Linux kernel version 4.x.

    The following packages have been upgraded to a later upstream version: kernel-alt (4.14.0). (BZ#1492717)

    Security Fix(es):

    * An industry-wide issue was found in the way many modern microprocessor designs have implemented     speculative execution of instructions (a commonly used performance optimization). There are three primary     variants of the issue which differ in the way the speculative execution can be exploited.

    Variant CVE-2017-5715 triggers the speculative execution by utilizing branch target injection. It relies     on the presence of a precisely-defined instruction sequence in the privileged code as well as the fact     that memory accesses may cause allocation into the microprocessor's data cache even for speculatively     executed instructions that never actually commit (retire). As a result, an unprivileged attacker could use     this flaw to cross the syscall and guest/host boundaries and read privileged memory by conducting targeted     cache side-channel attacks. (CVE-2017-5715, Important, ARM)

    Variant CVE-2017-5753 triggers the speculative execution by performing a bounds-check bypass. It relies on     the presence of a precisely-defined instruction sequence in the privileged code as well as the fact that     memory accesses may cause allocation into the microprocessor's data cache even for speculatively executed     instructions that never actually commit (retire). As a result, an unprivileged attacker could use this     flaw to cross the syscall boundary and read privileged memory by conducting targeted cache side-channel     attacks. (CVE-2017-5753, Important, ARM)

    Variant CVE-2017-5754 relies on the fact that, on impacted microprocessors, during speculative execution     of instruction permission faults, exception generation triggered by a faulting access is suppressed until     the retirement of the whole instruction block. In a combination with the fact that memory accesses may     populate the cache even when the block is being dropped and never committed (executed), an unprivileged     local attacker could use this flaw to read privileged (kernel space) memory by conducting targeted cache     side-channel attacks. (CVE-2017-5754, Important, ARM)

    * kernel: memory leak when merging buffers in SCSI IO vectors (CVE-2017-12190, Moderate)

    * kernel: net: double-free and memory corruption in get_net_ns_by_id() (CVE-2017-15129, Moderate)

    * kernel: Incorrect updates of uninstantiated keys crash the kernel (CVE-2017-15299, Moderate)

    * kernel: Missing capabilities check in net/netfilter/nfnetlink_cthelper.c allows for unprivileged access     to systemwide nfnl_cthelper_list structure (CVE-2017-17448, Moderate)

    * kernel: Missing namespace check in net/netlink/af_netlink.c allows for network monitors to observe     systemwide activity (CVE-2017-17449, Moderate)

    * kernel: Arbitrary stack overwrite causing oops via crafted signal frame (CVE-2017-1000255, Moderate)

    * kernel: Stack information leak in the EFS element (CVE-2017-1000410, Moderate)

    * kernel: Race condition in sound system can lead to denial of service (CVE-2018-1000004, Moderate)

    * kernel: Buffer overflow in mp_override_legacy_irq() (CVE-2017-11473, Low)

    * kernel: Integer overflow in futex.c:futux_requeue can lead to denial of service or unspecified impact     (CVE-2018-6927, Low)

    For more details about the security issue(s), including the impact, a CVSS score, and other related     information, refer to the CVE page(s) listed in the References section.

    Red Hat would like to thank Google Project Zero for reporting CVE-2017-5715, CVE-2017-5753, and     CVE-2017-5754; Vitaly Mayatskih for reporting CVE-2017-12190; Kirill Tkhai for reporting CVE-2017-15129;
    Michael Ellerman, Gustavo Romero, Breno Leitao, Paul Mackerras, and Cyril Bur for reporting     CVE-2017-1000255; and Armis Labs for reporting CVE-2017-1000410.

    Additional Changes:

    See the Red Hat Enterprise Linux 7.5 Release Notes linked from References.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

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

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

  - arch/x86/kvm/mmu.c in the Linux kernel through 4.13.5,     when nested virtualisation is used, does not properly     traverse guest pagetable entries to resolve a guest     virtual address, which allows L1 guest OS users to     execute arbitrary code on the host OS or cause a denial     of service (incorrect index during page walking, and     host OS crash), aka an MMU potential stack buffer     overrun.(CVE-2017-12188)

  - A vulnerability was found in the Key Management sub     component of the Linux kernel, where when trying to     issue a KEYTCL_READ on negative key would lead to a     NULL pointer dereference. A local attacker could use     this flaw to crash the kernel.(CVE-2017-12192)

  - security/keys/keyctl.c in the Linux kernel before     4.11.5 does not consider the case of a NULL payload in     conjunction with a nonzero length value, which allows     local users to cause a denial of service (NULL pointer     dereference and OOPS) via a crafted add_key or keyctl     system call, a different vulnerability than     CVE-2017-12192.(CVE-2017-15274)

  - Linux kernel: heap out-of-bounds in AF_PACKET sockets.
    This new issue is analogous to previously disclosed     CVE-2016-8655. In both cases, a socket option that     changes socket state may race with safety checks in     packet_set_ring. Previously with PACKET_VERSION. This     time with PACKET_RESERVE. The solution is similar: lock     the socket for the update. This issue may be     exploitable, we did not investigate further. As this     issue affects PF_PACKET sockets, it requires     CAP_NET_RAW in the process namespace. But note that     with user namespaces enabled, any process can create a     namespace in which it has     CAP_NET_RAW.(CVE-2017-1000111)

  - Use-after-free vulnerability in the Linux kernel before     4.14-rc5 allows local users to have unspecified impact     via vectors related to /dev/snd/seq.(CVE-2017-15265)

  - net/packet/af_packet.c in the Linux kernel before     4.13.6 allows local users to gain privileges via     crafted system calls that trigger mishandling of     packet_fanout data structures, because of a race     condition (involving fanout_add and packet_do_bind)     that leads to a use-after-free, a different     vulnerability than CVE-2017-6346.(CVE-2017-15649)

  - The sg_ioctl function in drivers/scsi/sg.c in the Linux     kernel before 4.13.4 allows local users to obtain     sensitive information from uninitialized kernel     heap-memory locations via an SG_GET_REQUEST_TABLE ioctl     call for /dev/sg0.(CVE-2017-14991)

  - 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)

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 OracleVM system is missing necessary patches to address critical security updates : please see Oracle VM Security Advisory OVMSA-2018-0035 for details.

The remote NewStart CGSL host, running version MAIN 4.05, has kernel packages installed that are affected by multiple vulnerabilities:

  - The keyctl_read_key function in security/keys/keyctl.c in the Key Management subcomponent in the Linux     kernel before 4.13.5 does not properly consider that a key may be possessed but negatively instantiated,     which allows local users to cause a denial of service (OOPS and system crash) via a crafted KEYCTL_READ     operation. (CVE-2017-12192)

  - The KEYS subsystem in the Linux kernel before 3.18 allows local users to gain privileges or cause a denial     of service (NULL pointer dereference and system crash) via vectors involving a NULL value for a certain     match field, related to the keyring_search_iterator function in keyring.c. (CVE-2017-2647)

  - A NULL pointer dereference flaw was found in the Linux kernel's SELinux subsystem in versions before 5.7.
    This flaw occurs while importing the Commercial IP Security Option (CIPSO) protocol's category bitmap into     the SELinux extensible bitmap via the' ebitmap_netlbl_import' routine. While processing the CIPSO     restricted bitmap tag in the 'cipso_v4_parsetag_rbm' routine, it sets the security attribute to indicate     that the category bitmap is present, even if it has not been allocated. This issue leads to a NULL pointer     dereference issue while importing the same category bitmap into SELinux. This flaw allows a remote network     user to crash the system kernel, resulting in a denial of service. (CVE-2020-10711)

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
105146	OracleVM 3.4 : Unbreakable / etc (OVMSA-2017-0172) (Dirty COW)	Nessus	OracleVM Local Security Checks	2017/12/11	2021/1/4	high
108942	RHEL 7 : kernel-alt (RHSA-2018:0654)	Nessus	Red Hat Local Security Checks	2018/4/10	2025/3/16	high
104296	EulerOS 2.0 SP1 : kernel (EulerOS-SA-2017-1271)	Nessus	Huawei Local Security Checks	2017/11/1	2021/1/6	high
109158	OracleVM 3.4 : Unbreakable / etc (OVMSA-2018-0035) (Dirty COW) (Meltdown) (Spectre)	Nessus	OracleVM Local Security Checks	2018/4/19	2024/10/30	high
160776	NewStart CGSL MAIN 4.05 : kernel Multiple Vulnerabilities (NS-SA-2022-0001)	Nessus	NewStart CGSL Local Security Checks	2022/5/9	2022/5/9	high

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