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Ubuntu 6.06 LTS / 7.04 / 7.10 / 8.04 LTS : postfix vulnerability (USN-636-1)

medium Nessus Plugin ID 33941

Synopsis

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

Description

Sebastian Krahmer discovered that Postfix was not correctly handling mailbox ownership when dealing with Linux's implementation of hardlinking to symlinks. In certain mail spool configurations, a local attacker could exploit this to append data to arbitrary files as the root user. The default Ubuntu configuration was not vulnerable.

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://usn.ubuntu.com/636-1/

Plugin Details

Severity: Medium

ID: 33941

File Name: ubuntu_USN-636-1.nasl

Version: 1.17

Type: local

Agent: unix

Published: 8/20/2008

Updated: 1/19/2021

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

Risk Information

VPR

Risk Factor: High

Score: 8.9

CVSS v2

Risk Factor: Medium

Base Score: 6.2

Temporal Score: 4.9

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

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:postfix, p-cpe:/a:canonical:ubuntu_linux:postfix-cdb, p-cpe:/a:canonical:ubuntu_linux:postfix-dev, p-cpe:/a:canonical:ubuntu_linux:postfix-doc, p-cpe:/a:canonical:ubuntu_linux:postfix-ldap, p-cpe:/a:canonical:ubuntu_linux:postfix-mysql, p-cpe:/a:canonical:ubuntu_linux:postfix-pcre, p-cpe:/a:canonical:ubuntu_linux:postfix-pgsql, cpe:/o:canonical:ubuntu_linux:6.06:-:lts, cpe:/o:canonical:ubuntu_linux:7.04, cpe:/o:canonical:ubuntu_linux:7.10, cpe:/o:canonical:ubuntu_linux:8.04:-:lts

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 8/19/2008

Vulnerability Publication Date: 8/18/2008

Reference Information

CVE: CVE-2008-2936

BID: 30691

CWE: 264

USN: 636-1