In PyYAML before 5.1, the yaml.load() API could execute arbitrary code if used with untrusted data. The load() function has been deprecated in version 5.1 and the 'UnsafeLoader' has been introduced for backward compatibility with the function.

An update of the PyYAML package has been released.

An update of the linux package has been released.

The version of F5 Networks BIG-IP installed on the remote host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the K000139901 advisory.

    In PyYAML before 5.1, the yaml.load() API could execute arbitrary code if used with untrusted data. The     load() function has been deprecated in version 5.1 and the 'UnsafeLoader' has been introduced for backward     compatibility with the function.(CVE-2017-18342)

Tenable has extracted the preceding description block directly from the F5 Networks BIG-IP 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 Redhat Enterprise Linux 6 host has one or more packages installed that are affected by a vulnerability that has been acknowledged by the vendor but will not be patched.

  - PyYAML: yaml.load() API could execute arbitrary code (CVE-2017-18342)

Note that Nessus has not tested for this issue but has instead relied on the package manager's report that the package is installed.

The remote Redhat Enterprise Linux 7 host has one or more packages installed that are affected by a vulnerability that has been acknowledged by the vendor but will not be patched.

  - PyYAML: yaml.load() API could execute arbitrary code (CVE-2017-18342)

Note that Nessus has not tested for this issue but has instead relied on the package manager's report that the package is installed.

This plugin has been deprecated as it does not adhere to established standards for this style of check.

The remote Oracle Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2022-9341 advisory.

    [1.0.2-1.el8]
    - Fix multiple CVEs : CVE-2017-18342, CVE-2020-10109, CVE-2020-10108,       CVE-2021-33203, CVE-2021-33571, CVE-2021-44420, CVE-2021-31542,       CVE-2021-28658, CVE-2021-28957, CVE-2021-43818, CVE-2020-27783 [Orabug:
      34109801]

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 host is affected by the vulnerability described in GLSA-202003-45 (PyYAML: Arbitrary code execution)

    It was found that using yaml.load() API on untrusted input could lead to       arbitrary code execution.
  Impact :

    A remote attacker could entice a user to process specially crafted input       in an application using yaml.load() from PyYAML, possibly resulting in       execution of arbitrary code with the privileges of the process or a       Denial of Service condition.
  Workaround :

    There is no known workaround at this time.

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 :

  - In PyYAML before 4.1, the yaml.load() API could execute     arbitrary code. In other words, yaml.safe_load is not     used.(CVE-2017-18342)

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 packages installed, the EulerOS installation on the remote host is affected by the following vulnerability :

  - In PyYAML before 5.1, the yaml.load() API could execute     arbitrary code if used with untrusted data. The load()     function has been deprecated in version 5.1 and the     'UnsafeLoader' has been introduced for backward     compatibility with the function.(CVE-2017-18342)

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 for ARM 64 installation on the remote host is affected by the following vulnerability :

  - In PyYAML before 4.1, the yaml.load() API could execute     arbitrary code. In other words, yaml.safe_load is not     used.i1/4^CVE-2017-18342i1/4%0

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.

New upstream release 5.1 (rhbz#1688414) Fixes CVE-2017-18342 (rhbz#1595744)

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

pyyaml reports :

the PyYAML.load function could be easily exploited to call any Python function. That means it could call any system command using os.system()

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

  - In PyYAML before 4.1, the yaml.load() API could execute     arbitrary code. In other words, yaml.safe_load is not     used.i1/4^CVE-2017-18342i1/4%0

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 :

  - In PyYAML before 4.1, the yaml.load() API could execute     arbitrary code. In other words, yaml.safe_load is not     used.(CVE-2017-18342)

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.

ID	Name	Product	Family	Severity
203130	Photon OS 2.0: Pyyaml PHSA-2019-2.0-0147	Nessus	PhotonOS Local Security Checks	critical
203120	Photon OS 2.0: Linux PHSA-2019-2.0-0147	Nessus	PhotonOS Local Security Checks	critical
203052	Photon OS 3.0: Pyyaml PHSA-2019-3.0-0010	Nessus	PhotonOS Local Security Checks	critical
200130	F5 Networks BIG-IP : PyYAML vulnerability (K000139901)	Nessus	F5 Networks Local Security Checks	critical
200033	RHEL 6 : pyyaml (Unpatched Vulnerability)	Nessus	Red Hat Local Security Checks	critical
199947	RHEL 7 : pyyaml (Unpatched Vulnerability)	Nessus	Red Hat Local Security Checks	critical
196325	RHEL 6 : pyyaml (Unpatched Vulnerability) (deprecated)	Nessus	Red Hat Local Security Checks	critical
196281	RHEL 7 : pyyaml (Unpatched Vulnerability) (deprecated)	Nessus	Red Hat Local Security Checks	critical
160271	Oracle Linux 8 : ol-automation-manager (ELSA-2022-9341)	Nessus	Oracle Linux Local Security Checks	high
134731	GLSA-202003-45 : PyYAML: Arbitrary code execution	Nessus	Gentoo Local Security Checks	critical
132837	EulerOS Virtualization for ARM 64 3.0.5.0 : PyYAML (EulerOS-SA-2020-1083)	Nessus	Huawei Local Security Checks	critical
131365	EulerOS 2.0 SP8 : PyYAML (EulerOS-SA-2019-2299)	Nessus	Huawei Local Security Checks	critical
125567	EulerOS Virtualization for ARM 64 3.0.2.0 : PyYAML (EulerOS-SA-2019-1615)	Nessus	Huawei Local Security Checks	critical
125084	Photon OS 1.0: Pyyaml PHSA-2019-1.0-0224	Nessus	PhotonOS Local Security Checks	critical
124491	Fedora 30 : PyYAML (2019-44643e8bcb)	Nessus	Fedora Local Security Checks	critical
124287	FreeBSD : py-yaml -- arbitrary code execution (f6ea18bb-65b9-11e9-8b31-002590045d9c)	Nessus	FreeBSD Local Security Checks	critical
123910	EulerOS Virtualization 2.5.4 : PyYAML (EulerOS-SA-2019-1224)	Nessus	Huawei Local Security Checks	critical
123041	Fedora 28 : PyYAML (2019-779a9db46a)	Nessus	Fedora Local Security Checks	critical
122984	Fedora 29 : PyYAML (2019-bed9afe622)	Nessus	Fedora Local Security Checks	critical
122383	EulerOS 2.0 SP2 : PyYAML (EulerOS-SA-2019-1056)	Nessus	Huawei Local Security Checks	critical
122214	EulerOS 2.0 SP5 : PyYAML (EulerOS-SA-2019-1041)	Nessus	Huawei Local Security Checks	critical
122213	EulerOS 2.0 SP3 : PyYAML (EulerOS-SA-2019-1040)	Nessus	Huawei Local Security Checks	critical

Detections

Analytics

CVE-2017-18342

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