Debian dsa-6330 : charon-cmd - security update

critical Nessus Plugin ID 320467

Synopsis

The remote Debian host is missing a security-related update.

Description

The remote Debian 12 / 13 host has packages installed that are affected by a vulnerability as referenced in the dsa-6330 advisory.

- ------------------------------------------------------------------------- Debian Security Advisory DSA-6330-1 [email protected] https://www.debian.org/security/ Yves-Alexis Perez June 08, 2026 https://www.debian.org/security/faq
- -------------------------------------------------------------------------

Package : strongswan CVE ID : CVE-2026-47895 Debian Bug :

Elliott Childre identified a vulnerability in strongSwan, an IKE/IPsec suite.
The bug happens when cloning certain identities and can lead to a double-free, a daemon crash (leading to denial of service) and potentially remote code execution.

Upstream lists several mitigations:
- - Servers that don't use EAP or XAuth authentication are not vulnerable to remote attacks.
- - Servers that use EAP authentication but delegate it to a RADIUS server and don't request an EAP-Identity themselves are not vulnerable either. However, note that the `eap-radius` plugin parses `Class` and `Filter-Id` attributes as group identities if enabled, in which case a rogue RADIUS server is able to trigger the issue.
- - Servers that use IKEv1 with XAuth are not vulnerable unless they use the `xauth-eap` plugin.

For the oldstable distribution (bookworm), this problem has been fixed in version 5.9.8-5+deb12u5.

For the stable distribution (trixie), this problem has been fixed in version 6.0.1-6+deb13u6.

We recommend that you upgrade your strongswan packages.

For the detailed security status of strongswan please refer to its security tracker page at:
https://security-tracker.debian.org/tracker/strongswan

Further information about Debian Security Advisories, how to apply these updates to your system and frequently asked questions can be found at: https://www.debian.org/security/

Mailing list: [email protected]

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

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

Solution

Upgrade the charon-cmd packages.

Plugin Details

Severity: Critical

ID: 320467

File Name: debian_DSA-6330.nasl

Version: 1.1

Type: Local

Agent: unix

Family: Debian Local Security Checks

Published: 6/11/2026

Updated: 6/11/2026

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: High

Score: 7.4

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

CVSS Score Source: CVE-2026-47895

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:libstrongswan-standard-plugins, p-cpe:/a:debian:debian_linux:libstrongswan-extra-plugins, p-cpe:/a:debian:debian_linux:strongswan-nm, p-cpe:/a:debian:debian_linux:charon-cmd, p-cpe:/a:debian:debian_linux:strongswan-pki, p-cpe:/a:debian:debian_linux:strongswan-libcharon, p-cpe:/a:debian:debian_linux:libcharon-extauth-plugins, p-cpe:/a:debian:debian_linux:strongswan, p-cpe:/a:debian:debian_linux:libstrongswan, cpe:/o:debian:debian_linux:12.0, cpe:/o:debian:debian_linux:13.0, p-cpe:/a:debian:debian_linux:strongswan-swanctl, p-cpe:/a:debian:debian_linux:strongswan-starter, p-cpe:/a:debian:debian_linux:strongswan-charon, p-cpe:/a:debian:debian_linux:charon-systemd, p-cpe:/a:debian:debian_linux:libcharon-extra-plugins

Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

Exploit Ease: No known exploits are available

Patch Publication Date: 6/8/2026

Vulnerability Publication Date: 6/8/2026

Reference Information

CVE: CVE-2026-47895

Detections

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