Openwall GNU/*/Linux - a small security-enhanced Linux distro for servers
[<prev] [next>] [thread-next>] [day] [month] [year] [list]
Date: Wed, 9 Mar 2016 20:21:45 +0100
From: Hanno Böck <hanno@...eck.de>
To: oss-security@...ts.openwall.com, cve-assign@...re.org
Subject: Heap use after free in Pidgin-OTR plugin

https://blog.fuzzing-project.org/39-Heap-use-after-free-in-Pidgin-OTR-plugin.html

The pidgin-otr plugin version 4.0.2 fixes a heap use after free error.
The bug is triggered when a user tries to authenticate a buddy and
happens in the function create_smp_dialog.

The bug was discovered with Address Sanitizer. This is yet another
example why all C/C++ code should be tested with Address Sanitizer
enabled.

This bug was already independently discovered and reported in the otr
bug tracker.
https://bugs.otr.im/issues/88

Independend of this bug another more severe bug in Libotr itself was
also disclosed today, please make sure you update both libotr (4.1.1)
and the pidgin-otr plugin (4.0.2).
https://www.x41-dsec.de/lab/advisories/x41-2016-001-libotr/

Upstream bug report (contains Address Sanitizer stack trace):
https://bugs.otr.im/issues/128
Commit / fix:
https://bugs.otr.im/projects/pidgin-otr/repository/revisions/aaf551b9dd5cbba8c4abaa3d4dc7ead860efef94

-- 
Hanno Böck
https://hboeck.de/

mail/jabber: hanno@...eck.de
GPG: BBB51E42

Content of type "application/pgp-signature" skipped

Powered by blists - more mailing lists

Your e-mail address:

Please check out the Open Source Software Security Wiki, which is counterpart to this mailing list.

Confused about mailing lists and their use? Read about mailing lists on Wikipedia and check out these guidelines on proper formatting of your messages.