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Ubuntu 22.04 LTS / 24.04 LTS / 26.04 LTS : Suricata-Update vulnerability (USN-8766-1)

high Nessus Plugin ID 346238

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Synopsis

The remote Ubuntu host is missing a security update.

Description

The remote Ubuntu 22.04 LTS / 24.04 LTS / 26.04 LTS host has a package installed that is affected by a vulnerability as referenced in the USN-8766-1 advisory.

 Guillem Lefait discovered that Suricata-Update did not properly validate destination paths when extracting files referenced by downloaded rule archives. An attacker could possibly use this issue to write arbitrary files outside the configured rules directory.

Tenable has extracted the preceding description block directly from the Ubuntu 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 suricata-update package.

See Also

https://ubuntu.com/security/notices/USN-8766-1

Plugin Details

Severity: High

ID: 346238

File Name: ubuntu_USN-8766-1.nasl

Version: 1.1

Type: Local

Agent: unix

Published: 9/16/2026

Updated: 9/16/2026

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.65

CVSS v2

Risk Factor: Medium

Base Score: 6.4

Temporal Score: 4.7

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

CVSS Score Source: CVE-2026-63347

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

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

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

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:22.04:-:lts, cpe:/o:canonical:ubuntu_linux:24.04:-:lts, cpe:/o:canonical:ubuntu_linux:26.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:suricata-update

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

Exploit Ease: No known exploits are available

Patch Publication Date: 9/15/2026

Vulnerability Publication Date: 9/15/2026

Reference Information

CVE: CVE-2026-63347

USN: 8766-1