Input validation error in Pidgin - CVE-2011-4602

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Main Vulnerability Database Vulnerabilities #VU44442

Input validation error in Pidgin - CVE-2011-4602

Published: December 17, 2011 / Updated: August 11, 2020


Vulnerability identifier: #VU44442
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2011-4602
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote non-authenticated attacker to perform service disruption.

The XMPP protocol plugin in libpurple in Pidgin before 2.10.1 does not properly handle missing fields in (1) voice-chat and (2) video-chat stanzas, which allows remote attackers to cause a denial of service (application crash) via a crafted message.


Affected software

Pidgin
Ubuntu
libpurple0 (Ubuntu package)
finch (Ubuntu package)
pidgin (Ubuntu package)

How to mitigate CVE-2011-4602

Install update from vendor's website.

libpurple0 (Ubuntu package) - addressed in versions 1:2.6.6-1ubuntu4.5, 1:2.7.11-1ubuntu2.2, 1:2.10.0-0ubuntu2.1, 1:2.10.3-0ubuntu1.1
finch (Ubuntu package) - addressed in versions 1:2.6.6-1ubuntu4.5, 1:2.7.11-1ubuntu2.2, 1:2.10.0-0ubuntu2.1, 1:2.10.3-0ubuntu1.1
pidgin (Ubuntu package) - addressed in versions 1:2.6.6-1ubuntu4.5, 1:2.7.11-1ubuntu2.2, 1:2.10.0-0ubuntu2.1, 1:2.10.3-0ubuntu1.1

External References

Related Security Bulletins