Ubuntu 14.04 LTS / 16.04 LTS : libXfont vulnerabilities (USN-3442-1)

high Nessus Plugin ID 103774

Synopsis

The remote Ubuntu host is missing one or more security updates.

Description

It was discovered that libXfont incorrectly handled certain patterns in PatternMatch. A local attacker could use this issue to cause libXfont to crash, resulting in a denial of service, or possibly obtain sensitive information. (CVE-2017-13720)

It was discovered that libXfont incorrectly handled certain malformed PCF files. A local attacker could use this issue to cause libXfont to crash, resulting in a denial of service, or possibly obtain sensitive information. (CVE-2017-13722).

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-3442-1

Plugin Details

Severity: High

ID: 103774

File Name: ubuntu_USN-3442-1.nasl

Version: 3.10

Type: local

Agent: unix

Published: 10/11/2017

Updated: 10/20/2023

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

Risk Information

VPR

Risk Factor: Medium

Score: 5.2

CVSS v2

Risk Factor: Low

Base Score: 3.6

Temporal Score: 2.7

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

CVSS Score Source: CVE-2017-13722

CVSS v3

Risk Factor: High

Base Score: 7.1

Temporal Score: 6.2

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

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

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:libxfont1, p-cpe:/a:canonical:ubuntu_linux:libxfont1-dev, p-cpe:/a:canonical:ubuntu_linux:libxfont1-udeb, p-cpe:/a:canonical:ubuntu_linux:libxfont2, p-cpe:/a:canonical:ubuntu_linux:libxfont2-udeb, cpe:/o:canonical:ubuntu_linux:14.04:-:lts, cpe:/o:canonical:ubuntu_linux:16.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:libxfont-dev

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

Exploit Ease: No known exploits are available

Patch Publication Date: 10/10/2017

Vulnerability Publication Date: 10/11/2017

Reference Information

CVE: CVE-2017-13720, CVE-2017-13722

USN: 3442-1