Ubuntu 14.04 LTS / 16.04 LTS : Libgcrypt vulnerability (USN-3065-1)

medium Nessus Plugin ID 93046

Synopsis

The remote Ubuntu host is missing a security update.

Description

Felix Dorre and Vladimir Klebanov discovered that Libgcrypt incorrectly handled mixing functions in the random number generator.
An attacker able to obtain 4640 bits from the RNG can trivially predict the next 160 bits of output.

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

Solution

Update the affected packages.

See Also

https://ubuntu.com/security/notices/USN-3065-1

Plugin Details

Severity: Medium

ID: 93046

File Name: ubuntu_USN-3065-1.nasl

Version: 2.9

Type: local

Agent: unix

Published: 8/19/2016

Updated: 10/23/2023

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, 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 Score Source: CVE-2016-6313

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:canonical:ubuntu_linux:libgcrypt11, p-cpe:/a:canonical:ubuntu_linux:libgcrypt11-dev, p-cpe:/a:canonical:ubuntu_linux:libgcrypt11-udeb, p-cpe:/a:canonical:ubuntu_linux:libgcrypt20, p-cpe:/a:canonical:ubuntu_linux:libgcrypt20-dev, p-cpe:/a:canonical:ubuntu_linux:libgcrypt20-udeb, cpe:/o:canonical:ubuntu_linux:14.04:-:lts, cpe:/o:canonical:ubuntu_linux:16.04:-:lts

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

Exploit Ease: No known exploits are available

Patch Publication Date: 8/18/2016

Vulnerability Publication Date: 12/13/2016

Reference Information

CVE: CVE-2016-6313

USN: 3065-1