#VU44427 Input validation error in Pidgin - CVE-2011-4601
Vulnerability identifier: #VU44427
Vulnerability risk: Medium
CVSSv4.0: 2.7 [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:
CWE-ID:
CWE-20
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
Pidgin
Client/Desktop applications /
Messaging software
Vendor: pidgin.im
Description
The vulnerability allows a remote non-authenticated attacker to perform service disruption.
family_feedbag.c in the oscar 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 (1) AIM or (2) ICQ message associated with buddy-list addition.
Mitigation
Install update from vendor's website.
Vulnerable software versions
Pidgin: 2.0.0 - 2.9.0
External links
https://developer.pidgin.im/viewmtn/revision/diff/bc79b1bf09dcfa1d8edac86a06761fce7416e69c/with/757272a78a8ca6027d518e614712c3399e34dda3/libpurple/protocols/oscar/family_feedbag.c
https://developer.pidgin.im/viewmtn/revision/info/757272a78a8ca6027d518e614712c3399e34dda3
https://pidgin.im/news/security/?id=57
https://secunia.com/advisories/47219
https://secunia.com/advisories/47234
https://www.mandriva.com/security/advisories?name=MDVSA-2011:183
https://www.openwall.com/lists/oss-security/2011/12/10/1
https://www.openwall.com/lists/oss-security/2011/12/10/2
https://www.redhat.com/support/errata/RHSA-2011-1820.html
https://www.redhat.com/support/errata/RHSA-2011-1821.html
https://www.securityfocus.com/bid/51010
https://hermes.opensuse.org/messages/13195955
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A18408
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
