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

High Nessus Plugin ID 55091

New! Vulnerability Priority Rating (VPR)

Tenable calculates a dynamic VPR for every vulnerability. VPR combines vulnerability information with threat intelligence and machine learning algorithms to predict which vulnerabilities are most likely to be exploited in attacks. Read more about what VPR is and how it's different from CVSS.

VPR Score: 7

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: 2011/06/13

Updated: 2019/09/19

Dependencies: 12634

Risk Information

Risk Factor: High

VPR Score: 7

CVSS v2.0

Base Score: 7.5

Temporal Score: 5.5

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

Temporal Vector: CVSS2#E:U/RL:OF/RC:C

Vulnerability Information

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

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

Exploit Available: false

Exploit Ease: No known exploits are available

Patch Publication Date: 2011/05/10

Vulnerability Publication Date: 2011/10/04

Reference Information

CVE: CVE-2011-1764

BID: 47736

USN: 1130-1