10 - USN-820-1

Executive Summary

Summary
Title	Pidgin vulnerability

Informations
Name	USN-820-1	First vendor Publication	2009-08-20
Vendor	Ubuntu	Last vendor Modification	2009-08-20
Severity (Vendor)	N/A	Revision	N/A

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score	NA
Base Score	NA	Environmental Score	NA
impact SubScore	NA	Temporal Score	NA
Exploitabality Sub Score	NA

Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:N/C:C/I:C/A:C)
Cvss Base Score	10	Attack Range	Network
Cvss Impact Score	10	Attack Complexity	Low
Cvss Expoit Score	10	Authentication	None Required
Calculate full CVSS 2.0 Vectors scores

Detail

A security issue affects the following Ubuntu releases:

Ubuntu 8.04 LTS Ubuntu 8.10 Ubuntu 9.04

This advisory also applies to the corresponding versions of Kubuntu, Edubuntu, and Xubuntu.

The problem can be corrected by upgrading your system to the following package versions:

Ubuntu 8.04 LTS:
pidgin 1:2.4.1-1ubuntu2.6

Ubuntu 8.10:
pidgin 1:2.5.2-0ubuntu1.4

Ubuntu 9.04:
pidgin 1:2.5.5-1ubuntu8.4

After a standard system upgrade you need to restart Pidgin to effect the necessary changes.

Details follow:

Federico Muttis discovered that Pidgin did not properly handle certain malformed messages in the MSN protocol handler. A remote attacker could send a specially crafted message and possibly execute arbitrary code with user privileges.