Description
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.
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
- openSUSE-SU-2012:0066 vendor-advisory
- http://developer.pidgin.im/viewmtn/revision/info/fb216fc88b085afc06d9a15209519cde1f4df6c6
- oval:org.mitre.oval:def:18420 vdb-entry signature
- http://pidgin.im/news/security/?id=58
- 47219 third-party-advisory
- RHSA-2011:1821 vendor-advisory
- 47234 third-party-advisory