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FreeBSD : strongSwan -- Double-free when destroying certain cloned identities that can lead to remote code execution (a207a367-6359-11f1-8c57-000af7b98cf6)

critical Nessus Plugin ID 320012

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Synopsis

The remote FreeBSD host is missing one or more security-related updates.

Description

The version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the a207a367-6359-11f1-8c57-000af7b98cf6 advisory.

 R. Elliott Childre reports:
 The clone() method of the identification_t class doesn't correctly handle identities that have an empty but non-NULL encoding. Both objects will point to the same location, resulting in a double-free once the second object is destroyed. This can lead to a crash and could potentially be exploitable for remote code execution. Affected are all strongSwan versions since 4.3.3.

Tenable has extracted the preceding description block directly from the FreeBSD 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

Update the affected packages.

See Also

https://www.cve.org/CVERecord?id=CVE-2026-47895

http://www.nessus.org/u?01ea4b29

Plugin Details

Severity: Critical

ID: 320012

File Name: freebsd_pkg_a207a367635911f18c57000af7b98cf6.nasl

Version: 1.1

Type: Local

Published: 6/9/2026

Updated: 6/9/2026

Supported Sensors: 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:freebsd:freebsd:strongswan, cpe:/o:freebsd:freebsd

Required KB Items: Host/local_checks_enabled, Host/FreeBSD/release, Host/FreeBSD/pkg_info

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