Input validation error in libpurple and Pidgin - CVE-2011-2943
Published: August 29, 2011 / Updated: August 11, 2020
Vulnerability identifier: #VU44769
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-2011-2943
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: pidgin.im
Affected software:
libpurple
Pidgin
libpurple
Pidgin
Detailed vulnerability description
The vulnerability allows user-assisted remote attackers to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of user-supplied input. A remote attacker can cause a denial of service (NULL pointer dereference and application crash) via a crafted nickname that is not properly handled in a WHO response.
How to mitigate CVE-2011-2943
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.
Sources
- http://developer.pidgin.im/viewmtn/revision/diff/5749f9193063800d27bef75c2388f6f9cc2f7f37/with/5c2dba4a7e2e76b76e7f472b88953a4316706d43/libpurple/protocols/irc/msgs.c
- http://developer.pidgin.im/viewmtn/revision/info/5c2dba4a7e2e76b76e7f472b88953a4316706d43
- http://pidgin.im/news/security/?id=53
- http://secunia.com/advisories/45663
- http://secunia.com/advisories/45916
- http://securitytracker.com/id?1025961
- http://www.openwall.com/lists/oss-security/2011/08/20/2
- http://www.openwall.com/lists/oss-security/2011/08/22/2
- http://www.securityfocus.com/bid/49268
- https://bugzilla.redhat.com/show_bug.cgi?id=722939
- https://exchange.xforce.ibmcloud.com/vulnerabilities/69340
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A18005