Debian DLA-600-1 : libgcrypt11 security update

medium Nessus Plugin ID 93083

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Synopsis

The remote Debian host is missing a security update.

Description

The crypto library libgcrypt11 has a weakness in the random number generator.

CVE-2016-6313

Felix Dörre and Vladimir Klebanov from the Karlsruhe Institute of Technology found a bug in the mixing functions of Libgcrypt's random number generator. An attacker who obtains 4640 bits from the RNG can trivially predict the next 160 bits of output.

A first analysis on the impact of this bug in GnuPG shows that existing RSA keys are not weakened. For DSA and Elgamal keys it is also unlikely that the private key can be predicted from other public information.

For Debian 7 'Wheezy', these problems have been fixed in version 1.5.0-5+deb7u5.

We recommend that you upgrade your libgcrypt11 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 packages.

Plugin Details

Severity: Medium

ID: 93083

File Name: debian_DLA-600.nasl

Version: 2.6

Type: local

Agent: unix

Family: Debian Local Security Checks

Published: 8/24/2016

Updated: 1/11/2021

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

Risk Information

VPR

Risk Factor: Low

Score: 2.2

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

CVSS v3

Risk Factor: Medium

Base Score: 5.3

Temporal Score: 4.6

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

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

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:libgcrypt11, p-cpe:/a:debian:debian_linux:libgcrypt11-dbg, p-cpe:/a:debian:debian_linux:libgcrypt11-dev, p-cpe:/a:debian:debian_linux:libgcrypt11-doc, p-cpe:/a:debian:debian_linux:libgcrypt11-udeb, 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: 8/23/2016

Reference Information

CVE: CVE-2016-6313

Detections

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