Input validation error in Pidgin - CVE-2011-4603
Published: December 17, 2011 / Updated: August 11, 2020
Vulnerability identifier: #VU44441
CSH Severity: Medium
CVSS v4.0: 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/E:U/U:Green
CVE-ID: CVE-2011-4603
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: pidgin.im
Affected software:
Pidgin
Pidgin
Detailed vulnerability description
The vulnerability allows a remote non-authenticated attacker to perform service disruption.
The silc_channel_message function in ops.c in the SILC protocol plugin in libpurple in Pidgin before 2.10.1 does not perform the expected UTF-8 validation on message data, which allows remote attackers to cause a denial of service (application crash) via a crafted message, a different vulnerability than CVE-2011-3594.
How to mitigate CVE-2011-4603
Install update from vendor's website.
Sources
- http://developer.pidgin.im/viewmtn/revision/diff/c7b95cc3be0590b52edc02d4750ae62844c1acb6/with/afb9ede3de989f217f03d5670cca00e628bd11f1/libpurple/protocols/silc/ops.c
- http://developer.pidgin.im/viewmtn/revision/info/afb9ede3de989f217f03d5670cca00e628bd11f1
- http://secunia.com/advisories/47234
- http://www.pidgin.im/news/security/?id=59
- http://www.redhat.com/support/errata/RHSA-2011-1820.html
- http://www.securityfocus.com/bid/51074
- https://hermes.opensuse.org/messages/13195955
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A18303