Description
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.
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 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 1
- RHSA-2011:1820 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/afb9ede3de989f217f03d5670cca00e628bd11f1
- 51074 vdb-entry
- openSUSE-SU-2012:0066 vendor-advisory
- oval:org.mitre.oval:def:18303 vdb-entry signature
- http://www.pidgin.im/news/security/?id=59
- http://developer.pidgin.im/viewmtn/revision/diff/c7b95cc3be0590b52edc02d4750ae62844c1acb6/with/afb9ede3de989f217f03d5670cca00e628bd11f1/libpurple/protocols/silc/ops.c
- 47234 third-party-advisory