Description
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.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | pidgin | 2.10.1-1 | — |
| Debian 13 | pidgin | 2.10.1-1 | — |
| Debian 12 | pidgin | 2.10.1-1 | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 6 | finch +9 | 2.7.9-3.el6.2 | RHSA-2011:1821 |
| RHEL 5 | finch +8 | 2.6.6-5.el5_7.4 | RHSA-2011:1820 |
| RHEL 4 | finch +8 | 2.6.6-10.el4 | RHSA-2011:1820 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Rhel Productivity 5 | finch +8 | 2.6.6-5.el5_7.4 | RHSA-2011:1820 |
Advisories 2
- RHSA-2011:1820 Red Hat Security Advisory: pidgin security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2011:1821 Red Hat Security Advisory: pidgin security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
References
- RHSA-2011:1820 vendor-advisory
- http://developer.pidgin.im/viewmtn/revision/info/757272a78a8ca6027d518e614712c3399e34dda3
- openSUSE-SU-2012:0066 vendor-advisory
- MDVSA-2011:183 vendor-advisory
- 47219 third-party-advisory
- [oss-security] 20111210 Re: CVE request: Pidgin crash mailing-list
- [oss-security] 20111209 CVE request: Pidgin crash mailing-list
- http://pidgin.im/news/security/?id=57
- RHSA-2011:1821 vendor-advisory
- http://developer.pidgin.im/viewmtn/revision/diff/bc79b1bf09dcfa1d8edac86a06761fce7416e69c/with/757272a78a8ca6027d518e614712c3399e34dda3/libpurple/protocols/oscar/family_feedbag.c
- oval:org.mitre.oval:def:18408 vdb-entry signature
- 47234 third-party-advisory
- 51010 vdb-entry