[arch-security] [ASA-201504-12] icecast: denial of service

[Christian Rebischke]

Arch Linux Security Advisory ASA-201504-12
=========================================

Severity: Medium
Date    : 2015-04-11
CVE-ID  : CVE-2015-3026
Package : icecast
Type    : denial of service
Remote  : Yes
Link    : https://wiki.archlinux.org/index.php/CVE

Summary
=======

The package icecast before version 2.4.2-1 is vulnerable to denial of service.

Resolution
==========

Upgrade to 2.4.2-1.

# pacman -Syu "icecast>=2.4.2-1"

The problem has been fixed upstream in version 2.4.2.

Workaround
==========

None.

Description
===========

CVE-2015-3026 (denial of service):

The bug can only be triggered if "stream_auth" is being used.
This means, that all installations that use a default configuration are
NOT affected.The default configuration only uses <source-password>.
Neither are simple mountpoints affected that use <password>.
A workaround, if installing an updated package is not possible, is to
disable "stream_auth"and use <password> instead.
As far as we understand the bug only leads to a simple remote denial of
service. The underlying issue is a null pointer dereference. For
clarity: No remote code execution should be possible, server just
segfaults.

Impact
======

An attacker could kill, with triggering the server with a special URL,
the icecast-server due to a null pointer dereference. 

References
==========
http://seclists.org/oss-sec/2015/q2/78
http://seclists.org/oss-sec/2015/q2/80
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2015-3026
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=782120
https://trac.xiph.org/ticket/2191
http://lists.xiph.org/pipermail/icecast-dev/2015-April/002460.html
https://trac.xiph.org/changeset/27abfbbd688df3e3077b535997330aa06603250f/icecast-server


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