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Ubuntu 8.04 LTS / 10.04 LTS / 11.04 / 11.10 / 12.04 LTS : expat vulnerabilities (USN-1527-1)

medium Nessus Plugin ID 61485

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Synopsis

The remote Ubuntu host is missing one or more security-related patches.

Description

It was discovered that Expat computed hash values without restricting the ability to trigger hash collisions predictably. If a user or application linked against Expat were tricked into opening a crafted XML file, an attacker could cause a denial of service by consuming excessive CPU resources. (CVE-2012-0876)

Tim Boddy discovered that Expat did not properly handle memory reallocation when processing XML files. If a user or application linked against Expat were tricked into opening a crafted XML file, an attacker could cause a denial of service by consuming excessive memory resources. This issue only affected Ubuntu 8.04 LTS, 10.04 LTS, 11.04 and 11.10. (CVE-2012-1148).

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 lib64expat1, libexpat1 and / or libexpat1-udeb packages.

See Also

https://usn.ubuntu.com/1527-1/

Plugin Details

Severity: Medium

ID: 61485

File Name: ubuntu_USN-1527-1.nasl

Version: 1.11

Type: local

Agent: unix

Published: 8/10/2012

Updated: 9/19/2019

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

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:11.04, cpe:/o:canonical:ubuntu_linux:12.04:-:lts, cpe:/o:canonical:ubuntu_linux:8.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:libexpat1-udeb, p-cpe:/a:canonical:ubuntu_linux:libexpat1, p-cpe:/a:canonical:ubuntu_linux:lib64expat1, cpe:/o:canonical:ubuntu_linux:10.04:-:lts, cpe:/o:canonical:ubuntu_linux:11.10

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

Exploit Ease: No known exploits are available

Patch Publication Date: 8/9/2012

Vulnerability Publication Date: 7/3/2012

Reference Information

CVE: CVE-2012-0876, CVE-2012-1148

BID: 52379

USN: 1527-1