Arch Linux: ASA-201603-14 High: Pidgin-Otr Arbitrary Code Execution

The package pidgin-otr before version 4.0.2-1 is vulnerable to use-after-free leading to denial of service or possible arbitrary code execution.

Arch Linux Security Advisory ASA-201603-14
=========================================
Severity: High
Date    : 2016-03-12
CVE-ID  : CVE-2015-8833
Package : pidgin-otr
Type    : arbitrary code execution
Remote  : Yes
Link    : https://wiki.archlinux.org/title/CVE

Summary
======
The package pidgin-otr before version 4.0.2-1 is vulnerable to
use-after-free leading to denial of service or possible arbitrary code
execution.

Resolution
=========
Upgrade to 4.0.2-1.

# pacman -Syu "pidgin-otr>=4.0.2-1"

The problem has been fixed upstream in version 4.0.2.

Workaround
=========
None.

Description
==========
The pidgin-otr plugin 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. This issue is leading to denial of service
or possibly remote code execution.

Impact
=====
A remote attacker is able to trigger a user-after-free during otr
authentication and possibly execute arbitrary code

References
=========
https://access.redhat.com/security/cve/CVE-2015-8833
https://seclists.org/oss-sec/2016/q1/572
https://bugs.archlinux.org/task/48537