Ubuntu 16.04 ESM : Libksba vulnerability (USN-5787-2)

critical Nessus Plugin ID 169707

Synopsis

The remote Ubuntu host is missing a security update.

Description

The remote Ubuntu 16.04 ESM host has packages installed that are affected by a vulnerability as referenced in the USN-5787-2 advisory.

USN-5787-1 fixed vulnerabilities in Libksba. This update provides the corresponding updates for Ubuntu 16.04 ESM and Ubuntu 14.04 ESM.

Original advisory details:

It was discovered that Libksba incorrectly handled parsing CRL signatures.

A remote attacker could use this issue to cause Libksba to crash, resulting

in a denial of service, or possibly execute arbitrary code.

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 libksba-dev and / or libksba8 packages.

See Also

https://ubuntu.com/security/notices/USN-5787-2

Plugin Details

Severity: Critical

ID: 169707

File Name: ubuntu_USN-5787-2.nasl

Version: 1.3

Type: local

Agent: unix

Published: 1/9/2023

Updated: 8/28/2024

Supported Sensors: Agentless Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.4

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

CVSS Score Source: CVE-2022-47629

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:canonical:ubuntu_linux:libksba-dev, p-cpe:/a:canonical:ubuntu_linux:libksba8, cpe:/o:canonical:ubuntu_linux:16.04:-:esm

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

Exploit Ease: No known exploits are available

Patch Publication Date: 1/9/2023

Vulnerability Publication Date: 12/20/2022

Reference Information

CVE: CVE-2022-47629

IAVA: 2023-A-0072

USN: 5787-2