The version of PyYAML installed on the remote CBL Mariner 2.0 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the CVE-2020-14343 advisory.

  - A vulnerability was discovered in the PyYAML library in versions before 5.4, where it is susceptible to     arbitrary code execution when it processes untrusted YAML files through the full_load method or with the     FullLoader loader. Applications that use the library to process untrusted input May be vulnerable to this     flaw. This flaw allows an attacker to execute arbitrary code on the system by abusing the     python/object/new constructor. This flaw is due to an incomplete fix for CVE-2020-1747. (CVE-2020-14343)

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

An update of the PyYAML package has been released.

According to the version of the PyYAML package installed, the EulerOS Virtualization for ARM 64 installation on the remote host is affected by the following vulnerability :

  - A vulnerability was discovered in the PyYAML library in     versions before 5.4, where it is susceptible to     arbitrary code execution when it processes untrusted     YAML files through the full_load method or with the     FullLoader loader. Applications that use the library to     process untrusted input may be vulnerable to this flaw.
    This flaw allows an attacker to execute arbitrary code     on the system by abusing the python/object/new     constructor. This flaw is due to an incomplete fix for     CVE-2020-1747.(CVE-2020-14343)

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.

According to the version of the PyYAML package installed, the EulerOS installation on the remote host is affected by the following vulnerability :

  - A vulnerability was discovered in the PyYAML library in     versions before 5.4, where it is susceptible to     arbitrary code execution when it processes untrusted     YAML files through the full_load method or with the     FullLoader loader. Applications that use the library to     process untrusted input may be vulnerable to this flaw.
    This flaw allows an attacker to execute arbitrary code     on the system by abusing the python/object/new     constructor. This flaw is due to an incomplete fix for     CVE-2020-1747.(CVE-2020-14343)

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.

According to the version of the PyYAML package installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerability :

  - A vulnerability was discovered in the PyYAML library in     versions before 5.4, where it is susceptible to     arbitrary code execution when it processes untrusted     YAML files through the full_load method or with the     FullLoader loader. Applications that use the library to     process untrusted input may be vulnerable to this flaw.
    This flaw allows an attacker to execute arbitrary code     on the system by abusing the python/object/new     constructor. This flaw is due to an incomplete fix for     CVE-2020-1747.(CVE-2020-14343)

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 SUSE Linux SLES12 / SLES_SAP12 host has packages installed that are affected by a vulnerability as referenced in the SUSE-SU-2021:2818-1 advisory.

  - A vulnerability was discovered in the PyYAML library in versions before 5.4, where it is susceptible to     arbitrary code execution when it processes untrusted YAML files through the full_load method or with the     FullLoader loader. Applications that use the library to process untrusted input may be vulnerable to this     flaw. This flaw allows an attacker to execute arbitrary code on the system by abusing the     python/object/new constructor. This flaw is due to an incomplete fix for CVE-2020-1747. (CVE-2020-14343)

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

The remote AlmaLinux 8 host has packages installed that are affected by a vulnerability as referenced in the ALSA-2021:2583 advisory.

    * PyYAML: incomplete fix for CVE-2020-1747 (CVE-2020-14343)

Tenable has extracted the preceding description block directly from the AlmaLinux security advisory.

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 a vulnerability as referenced in the RLSA-2021:2583 advisory.

  - A vulnerability was discovered in the PyYAML library in versions before 5.4, where it is susceptible to     arbitrary code execution when it processes untrusted YAML files through the full_load method or with the     FullLoader loader. Applications that use the library to process untrusted input may be vulnerable to this     flaw. This flaw allows an attacker to execute arbitrary code on the system by abusing the     python/object/new constructor. This flaw is due to an incomplete fix for CVE-2020-1747. (CVE-2020-14343)

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

ID	名称	产品	系列	发布时间	最近更新时间	严重程度
185499	CBL Mariner 2.0 Security Update: PyYAML (CVE-2020-14343)	Nessus	MarinerOS Local Security Checks	2023/11/13	2025/2/10	critical
146067	Photon OS 3.0: Pyyaml PHSA-2021-3.0-0190	Nessus	PhotonOS Local Security Checks	2021/2/2	2024/7/23	critical
147051	EulerOS Virtualization for ARM 64 3.0.6.0 : PyYAML (EulerOS-SA-2021-1565)	Nessus	Huawei Local Security Checks	2021/3/4	2024/1/16	critical
150205	EulerOS 2.0 SP9 : PyYAML (EulerOS-SA-2021-1958)	Nessus	Huawei Local Security Checks	2021/6/3	2023/12/27	critical
151250	EulerOS Virtualization 3.0.6.6 : PyYAML (EulerOS-SA-2021-2031)	Nessus	Huawei Local Security Checks	2021/7/1	2023/12/11	critical
152809	SUSE SLES12 Security Update : python-PyYAML (SUSE-SU-2021:2818-1)	Nessus	SuSE Local Security Checks	2021/8/25	2023/7/13	critical
157659	AlmaLinux 8 : python38:3.8 and python38-devel:3.8 (ALSA-2021:2583)	Nessus	Alma Linux Local Security Checks	2022/2/9	2025/1/13	critical
157771	Rocky Linux 8 : python38:3.8 and python38-devel:3.8 (RLSA-2021:2583)	Nessus	Rocky Linux Local Security Checks	2022/2/9	2023/11/6	critical

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