Alerts This Week
Warning Icon 1 1,149
Alerts This Week
Warning Icon 1 1,149

Gentoo: GLSA-202404-44 Normal: PyYAML Arbitrary Code Execution

gentoo
Calendar Grey February 26, 2024
Dist Gentoo Esm H88
An issue in PyYAML presents a risk of unrestricted code execution. To protect your environment from this vulnerability, move up to version 5.4 or above.
A vulnerability has been found in PyYAML which can lead to arbitrary code execution.

Summary

A vulnerability has been discovered in PyYAML. Please review the CVE identifier referenced below for details.

Topics%20covered

Topics Covered

security advisory Gentoo security issue software update arbitrary code execution normal severity PyYAML

Resolution

All PyYAML users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose ">=dev-python/pyyaml-5.4"

References

[ 1 ] CVE-2020-14343 https://nvd.nist.gov/vuln/detail/CVE-2020-14343

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website:
https://security.gentoo.org/glsa/202402-33
style>.gentoo_availability{display:block;}

Concerns

Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users' machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.

Severity: Normal
Title: PyYAML: Arbitrary Code Execution
Date: February 26, 2024
Bugs: #766228
ID: 202402-33

Topics%20covered

Topics Covered

security advisory Gentoo security issue software update arbitrary code execution normal severity PyYAML

Synopsis

A vulnerability has been found in PyYAML which can lead to arbitrary code execution.

Background

PyYAML is a YAML parser and emitter for Python.

Get the latest News and Insights

Get the latest Linux and open source security news straight to your inbox.

Affected Packages

Package Vulnerable Unaffected ----------------- ------------ ------------ dev-python/pyyaml < 5.4 >= 5.4

Impact

A vulnerability was discovered in the PyYAML library, 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.

Workaround

There is no known workaround at this time.

Your message here