Off-the-Record Messaging (OTR) Security Advisory 2012-01 Format string security flaw in pidgin-otr
Versions 3.2.0 and earlier of the pidgin-otr plugin contain a format string security flaw. This flaw could potentially be exploited by a remote attacker to cause arbitrary code to be executed on the user's machine. The flaw is in pidgin-otr, not in libotr. Other applications which use libotr are not affected. CVE-2012-2369 has been assigned to this issue. The recommended course of action is to upgrade pidgin-otr to version 3.2.1 immediately. The new version can be obtained here: Windows installer: http://otr.cypherpunks.ca/binaries/windows/pidgin-otr-3.2.1-1.exe gpg signature: http://otr.cypherpunks.ca/binaries/windows/pidgin-otr-3.2.1-1.exe.asc Windows zip file: http://otr.cypherpunks.ca/binaries/windows/pidgin-otr-3.2.1.zip gpg signature: http://otr.cypherpunks.ca/binaries/windows/pidgin-otr-3.2.1.zip.asc Source code: http://otr.cypherpunks.ca/pidgin-otr-3.2.1.tar.gz gpg signature: http://otr.cypherpunks.ca/pidgin-otr-3.2.1.tar.gz.asc git repository: git://otr.git.sourceforge.net/gitroot/otr/pidgin-otr (branch 3.2_dev) Version 4.0.0 (soon to be released) does not suffer from this flaw. Linux and *BSD vendors and package maintainers have been notified, and updated packages should be available from them. If upgrading to version 3.2.1 is not possible, please apply the following patch to 3.2.0: --- a/otr-plugin.c +++ b/otr-plugin.c @@ -296,7 +296,7 @@ static void still_secure_cb(void *opdata, ConnContext *conte static void log_message_cb(void *opdata, const char *message) { - purple_debug_info("otr", message); + purple_debug_info("otr", "%s", message); } static int max_message_size_cb(void *opdata, ConnContext *context) Our heartfelt thanks to intrigeri <intrig...@boum.org> for finding and alerting us to this flaw. Followups to the otr-users mailing list <otr-users@lists.cypherpunks.ca>, please. Your OTR development team, Ian Goldberg <i...@cs.uwaterloo.ca> Rob Smits <rdfsm...@cs.uwaterloo.ca> _______________________________________________ OTR-users mailing list OTR-users@lists.cypherpunks.ca http://lists.cypherpunks.ca/mailman/listinfo/otr-users