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Ubuntu 10.04 LTS / 10.10 / 11.04 : exim4 vulnerability (USN-1130-1)

high Nessus Plugin ID 55091

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Synopsis

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

Description

It was discovered that the Exim daemon did not correctly handle format strings in DKIM headers. An unauthenticated remote attacker could send specially crafted email to run arbitrary code as the Exim user. The default compiler options for affected releases reduces the vulnerability to a denial of service under most conditions.

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 exim4-daemon-custom, exim4-daemon-heavy and / or exim4-daemon-light packages.

See Also

https://usn.ubuntu.com/1130-1/

Plugin Details

Severity: High

ID: 55091

File Name: ubuntu_USN-1130-1.nasl

Version: 1.11

Type: local

Agent: unix

Published: 6/13/2011

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: Medium

Score: 5.5

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.5

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

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:10.04:-:lts, cpe:/o:canonical:ubuntu_linux:11.04, p-cpe:/a:canonical:ubuntu_linux:exim4-daemon-heavy, cpe:/o:canonical:ubuntu_linux:10.10, p-cpe:/a:canonical:ubuntu_linux:exim4-daemon-custom, p-cpe:/a:canonical:ubuntu_linux:exim4-daemon-light

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

Exploit Ease: No known exploits are available

Patch Publication Date: 5/10/2011

Vulnerability Publication Date: 10/4/2011

Reference Information

CVE: CVE-2011-1764

BID: 47736

USN: 1130-1