遠端 Rocky Linux 8 主機已安裝受到多個弱點影響的套件如 RLSA-2020:4694 公告中所提及。

  - 在 containernetworking/plugins 0.8.6 之前的所有版本中發現一個弱點，它允許 Kubernetes 叢集中的惡意容器執行攔截式 (MitM) 攻擊。惡意容器可利用此弱點，將惡意 IPv6 路由器廣告傳送至主機或其他容器，將流量重新導向至惡意容器。(CVE-2020-10749)

  - 在 QEMU 模擬器的 SLiRP 網路實作中發現一個超出邊界讀取弱點。
    在回覆 ICMP echo 要求 (又稱為 ping) 時，icmp6_send_echoreply() 常式中會出現此缺陷。惡意來賓可以利用此缺陷洩漏主機記憶體的內容，進而可能導致資訊洩漏。此缺陷會影響 libslirp 4.3.1 之前的版本。(CVE-2020-10756)

  - 0.3.3 之前的 x / text 套件 (適用於 Go) 在編碼/unicode 中有一個弱點，可導致 UTF-16 解碼器進入無限迴圈，進而造成程式損毀或記憶體不足。如果呼叫解碼器上的字串函式，或將解碼器傳遞至 golang.org/x/text/transform.String，則攻擊者可提供單一位元組給透過 UseBOM 或 ExpectBOM 具現化的 UTF16 解碼器，以觸發無限迴圈。(CVE-2020-14040)

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。

遠端 Oracle Linux 7 主機中安裝的套件受到 ELSA-2020-5726 公告中提及的多個弱點影響。

  - 在 containernetworking/plugins 0.8.6 之前的所有版本中發現一個弱點，它允許 Kubernetes 叢集中的惡意容器執行攔截式 (MitM) 攻擊。惡意容器可利用此弱點，將惡意 IPv6 路由器廣告傳送至主機或其他容器，將流量重新導向至惡意容器。(CVE-2020-10749)

  - Grafana 3.0.1 至 7.0.1 的 avatar 功能存在 SSRF 存取控制錯誤問題。任何未經驗證的使用者/用戶端皆可利用此弱點使 Grafana 傳送 HTTP 要求至任何 URL，並將結果傳回給該使用者/用戶端。攻擊者可藉此取得 Grafana 執行所在網路的相關資訊。此外，還可透過記憶體區段錯誤傳送無效的 URL 物件，對 Grafana 執行 DOS 攻擊。
    (CVE-2020-13379)

  - v1.0-1.14 版、v1.15.12 之前版本、v1.16.9、v1.17.5 和 v1.18.0 版的 Kubernetes kube-controller-manager 容易受到伺服器端要求偽造 (SSRF) 弱點影響，特定的授權使用者可藉此從主機網路 (例如 link-local 或 loopback 服務) 內未受保護的端點洩漏多達 500 個位元組的任意資訊。(CVE-2020-8555)

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。

This update for cni-plugins fixes the following issues :

cni-plugins updated to version 0.8.6&#9; 

  - CVE-2020-10749: Fixed a potential Man-in-the-Middle     attacks in IPv4 clusters by spoofing IPv6 router     advertisements (bsc#1172410).

Release notes:
https://github.com/containernetworking/plugins/releases/tag/v0.8.6

This update was imported from the SUSE:SLE-15-SP1:Update update project.

The remote Oracle Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2020-4694 advisory.

  - A vulnerability was found in all versions of containernetworking/plugins before version 0.8.6, that allows     malicious containers in Kubernetes clusters to perform man-in-the-middle (MitM) attacks. A malicious     container can exploit this flaw by sending rogue IPv6 router advertisements to the host or other     containers, to redirect traffic to the malicious container. (CVE-2020-10749)

  - The x/text package before 0.3.3 for Go has a vulnerability in encoding/unicode that could lead to the     UTF-16 decoder entering an infinite loop, causing the program to crash or run out of memory. An attacker     could provide a single byte to a UTF16 decoder instantiated with UseBOM or ExpectBOM to trigger an     infinite loop if the String function on the Decoder is called, or the Decoder is passed to     golang.org/x/text/transform.String. (CVE-2020-14040)

  - An out-of-bounds read vulnerability was found in the SLiRP networking implementation of the QEMU emulator.
    This flaw occurs in the icmp6_send_echoreply() routine while replying to an ICMP echo request, also known     as ping. This flaw allows a malicious guest to leak the contents of the host memory, resulting in possible     information disclosure. This flaw affects versions of libslirp before 4.3.1. (CVE-2020-10756)

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

The remote Oracle Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2020-5725 advisory.

    - CVE-2020-10749: IPv4 only clusters susceptible to MitM attacks via IPv6 rogue router advertisements
    - CVE-2020-8555: Half-Blind SSRF in kube-controller-manager

    kubeadm-ha-setup
    - Enhance image tag read to depend on kubeadm-registry.sh for CVE release       CVE-2020-10749: IPv4 only clusters susceptible to MitM attacks via IPv6 rogue router advertisements       CVE-2020-8555: Half-Blind SSRF in kube-controller-manager

    kubernetes-cni

Tenable has extracted the preceding description block directly from the Oracle 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.

The remote CentOS Linux 7 host has a package installed that is affected by a vulnerability as referenced in the RHSA-2020:2684 advisory.

  - A vulnerability was found in all versions of containernetworking/plugins before version 0.8.6, that allows     malicious containers in Kubernetes clusters to perform man-in-the-middle (MitM) attacks. A malicious     container can exploit this flaw by sending rogue IPv6 router advertisements to the host or other     containers, to redirect traffic to the malicious container. (CVE-2020-10749)

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

The remote Rocky Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2020:4694 advisory.

  - A vulnerability was found in all versions of containernetworking/plugins before version 0.8.6, that allows     malicious containers in Kubernetes clusters to perform man-in-the-middle (MitM) attacks. A malicious     container can exploit this flaw by sending rogue IPv6 router advertisements to the host or other     containers, to redirect traffic to the malicious container. (CVE-2020-10749)

  - An out-of-bounds read vulnerability was found in the SLiRP networking implementation of the QEMU emulator.
    This flaw occurs in the icmp6_send_echoreply() routine while replying to an ICMP echo request, also known     as ping. This flaw allows a malicious guest to leak the contents of the host memory, resulting in possible     information disclosure. This flaw affects versions of libslirp before 4.3.1. (CVE-2020-10756)

  - The x/text package before 0.3.3 for Go has a vulnerability in encoding/unicode that could lead to the     UTF-16 decoder entering an infinite loop, causing the program to crash or run out of memory. An attacker     could provide a single byte to a UTF16 decoder instantiated with UseBOM or ExpectBOM to trigger an     infinite loop if the String function on the Decoder is called, or the Decoder is passed to     golang.org/x/text/transform.String. (CVE-2020-14040)

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

The remote Oracle Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2020-5726 advisory.

    - CVE-2020-10749: IPv4 only clusters susceptible to MitM attacks via IPv6 rogue router advertisements
    - CVE-2020-8555: Half-Blind SSRF in kube-controller-manager
    - [CVE-2019-11254] kube-apiserver Denial of Service vulnerability from malicious YAML payloads
    - Update to kubernetes-cni for CVE-2020-10749
    - Update Istio to use Grafana 6.7.4 to address CVE-2020-13379

Tenable has extracted the preceding description block directly from the Oracle 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.

ID	名稱	產品	系列	已發布	已更新	嚴重性
185064	Rocky Linux 8container-tools:rhel8 (RLSA-2020:4694)	Nessus	Rocky Linux Local Security Checks	2023/11/7	2023/11/7	medium
180932	Oracle Linux 7：grafana / kubernetes-cni / kubernetes-cni-plugins / kubernetes / kubernetes / olcne (ELSA-2020-5726)	Nessus	Oracle Linux Local Security Checks	2023/9/7	2024/10/23	high
138981	openSUSE Security Update : cni-plugins (openSUSE-2020-1049)	Nessus	SuSE Local Security Checks	2020/7/27	2024/2/28	medium
180889	Oracle Linux 8 : container-tools:ol8 (ELSA-2020-4694)	Nessus	Oracle Linux Local Security Checks	2023/9/7	2024/11/1	medium
180943	Oracle Linux 7 : kubernetes / kubeadm-ha-setup / kubernetes-cni / kubernetes-cni-plugins (ELSA-2020-5725)	Nessus	Oracle Linux Local Security Checks	2023/9/7	2024/10/23	medium
208539	CentOS 7 : containernetworking-plugins (RHSA-2020:2684)	Nessus	CentOS Local Security Checks	2024/10/9	2024/10/9	medium
185064	Rocky Linux 8 : container-tools:rhel8 (RLSA-2020:4694)	Nessus	Rocky Linux Local Security Checks	2023/11/7	2023/11/7	medium
180932	Oracle Linux 7 : grafana / kubernetes-cni / kubernetes-cni-plugins / kubernetes / kubernetes / olcne (ELSA-2020-5726)	Nessus	Oracle Linux Local Security Checks	2023/9/7	2024/10/23	high

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