Description
directconn.c in the MSN protocol plugin in libpurple 2.7.6 through 2.7.8 in Pidgin before 2.7.9 allows remote authenticated users to cause a denial of service (NULL pointer dereference and application crash) via a short p2pv2 packet in a DirectConnect (aka direct connection) session.
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 | 2.7.9-1 | — |
| Debian 13 | pidgin | 2.7.9-1 | — |
| Debian 12 | pidgin | 2.7.9-1 | — |
References
- https://bugzilla.redhat.com/show_bug.cgi?id=665421
- SUSE-SR:2011:001 vendor-advisory
- [oss-security] 20101227 CVE Request -- Pidgin v2.7.6 <= x <= v2.7.8 -- MSN DirectConnect DoS (crash due NULL ptr dereference) after receiving a short P2P message mailing-list
- http://developer.pidgin.im/viewmtn/revision/diff/e76f4ad4ef2f10588195a0eedc7a08f82062f79c/with/aaa07bde3c51d3684391ae6ed86b6dbaeab5d031/libpurple/protocols/msn/directconn.c
- [oss-security] 20101231 Re: CVE Request -- Pidgin v2.7.6 <= x <= v2.7.8 -- MSN DirectConnect DoS (crash due NULL ptr dereference) after receiving a short P2P message mailing-list
- http://www.pidgin.im/news/security/?id=49
- MDVSA-2010:259 vendor-advisory
- oval:org.mitre.oval:def:18461 vdb-entry signature
- http://developer.pidgin.im/viewmtn/revision/info/aaa07bde3c51d3684391ae6ed86b6dbaeab5d031
- 45581 vdb-entry
- 42877 third-party-advisory
- ADV-2011-0028 vdb-entry
- [support] 20101227 Pidgin 2.7.9 released mailing-list
- 42732 third-party-advisory
- ADV-2011-0076 vdb-entry
- ADV-2011-0054 vdb-entry
- FEDORA-2010-19314 vendor-advisory
- FEDORA-2010-19317 vendor-advisory
- 42824 third-party-advisory