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Debian DSA-3861-1 : libtasn1-6 - security update

high Nessus Plugin ID 100392

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Synopsis

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

Description

Jakub Jirasek of Secunia Research discovered that libtasn1, a library used to handle Abstract Syntax Notation One structures, did not properly validate its input. This would allow an attacker to cause a crash by denial-of-service, or potentially execute arbitrary code, by tricking a user into processing a maliciously crafted assignments file.

Solution

Upgrade the libtasn1-6 packages.

For the stable distribution (jessie), this problem has been fixed in version 4.2-3+deb8u3.

See Also

https://packages.debian.org/source/jessie/libtasn1-6

https://www.debian.org/security/2017/dsa-3861

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=863186

Plugin Details

Severity: High

ID: 100392

File Name: debian_DSA-3861.nasl

Version: 3.10

Type: local

Agent: unix

Published: 5/25/2017

Updated: 1/11/2021

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

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5

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

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 7.7

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/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:libtasn1-6, cpe:/o:debian:debian_linux:8.0

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

Exploit Ease: No known exploits are available

Patch Publication Date: 5/24/2017

Reference Information

CVE: CVE-2017-6891

DSA: 3861