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Gentoo GLSA 202507-04: strongSwan Buffer Overflow Risk - Normal Severity

gentoo
Calendar Grey July 8, 2025
Dist Gentoo Esm H88
Vulnerability identified in strongSwan may allow for unpermitted execution; patch now released. Threat level: moderate
A buffer overflow has been discovered in strongSwan, which can lead to remote code execution.

Summary

Multiple vulnerabilities have been discovered in strongSwan. Please review the CVE identifiers referenced below for details.

Topics%20covered

Topics Covered

security advisory Gentoo buffer overflow remote execution normal strongSwan

Resolution

All strongSwan users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose ">=net-vpn/strongswan-5.9.13"

References

[ 1 ] CVE-2023-41913 https://nvd.nist.gov/vuln/detail/CVE-2023-41913

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website:
https://security.gentoo.org/glsa/202507-04
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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: strongSwan: Buffer Overflow
Date: July 08, 2025
Bugs: #920105
ID: 202507-04

Topics%20covered

Topics Covered

security advisory Gentoo buffer overflow remote execution normal strongSwan

Synopsis

A buffer overflow has been discovered in strongSwan, which can lead to remote code execution.

Background

strongSwan is an IPSec implementation for Linux.

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Affected Packages

Package Vulnerable Unaffected ------------------ ------------ ------------ net-vpn/strongswan < 5.9.13 >= 5.9.13

Impact

A vulnerability in charon-tkm related to processing DH public values was discovered in strongSwan that can result in a buffer overflow and potentially remote code execution.

Workaround

There is no known workaround at this time.

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