Debian DLA-470-1 : libksba security update

high Nessus Plugin ID 91132

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Synopsis

The remote Debian host is missing a security update.

Description

It was discovered that there was a possible read access beyond a buffer vulnerability in libksba, a X.509 and CMS certificate support library.

The returned length of the object from _ksba_ber_parse_tl (ti.length) was not always checked against the actual buffer length, thus leading to a read access after the end of the buffer and thus a SEGV.

For Debian 7 'Wheezy', this issue has been fixed in libksba version 1.2.0-2+deb7u2.

We recommend that you upgrade your libksba packages.

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Solution

Upgrade the affected libksba-dev, and libksba8 packages.

Plugin Details

Severity: High

ID: 91132

File Name: debian_DLA-470.nasl

Version: 2.10

Type: local

Agent: unix

Family: Debian Local Security Checks

Published: 5/16/2016

Updated: 1/11/2021

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

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

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:N/A:H

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

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:libksba8, p-cpe:/a:debian:debian_linux:libksba-dev, cpe:/o:debian:debian_linux:7.0

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

Exploit Ease: No known exploits are available

Patch Publication Date: 5/13/2016

Reference Information

CVE: CVE-2016-4579

Detections

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