[arch-security] [Arch Linux Security Advisory ASA-201411-5] konversation: denial of service

[Levente Polyak]

Arch Linux Security Advisory ASA-201411-5
=========================================

Severity: Low
Date    : 2014-11-09
CVE-ID  : CVE-2014-8483
Package : konversation
Type    : denial of service
Remote  : Yes
Link    : https://wiki.archlinux.org/index.php/CVE-2014

Summary
=======

The package konversation before version 1.5.1-1 is vulnerable to denial
of service.

Resolution
==========

Upgrade to 1.5.1-1.

# pacman -Syu "konversation>=1.5.1-1"

The problem has been fixed upstream [0] in version 1.5.1.

Workaround
==========

None.

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

Konversation's Blowfish ECB encryption support assumes incoming blocks
to be the expected 12 bytes. The lack of a sanity-check for the actual
size can cause a denial of service and an information leak to the local
user.

Impact
======

When using Blowfish ECB encryption with another party (an IRC channel
or user), sending malformed blocks to konversation can result in a
crash or an information leak up to 11 bytes to the local user, due to
an out-of-bounds read on a heap-allocated array.

References
==========

[0] https://github.com/quassel/quassel/commit/8b5ecd
https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2014-8483
https://bugs.archlinux.org/task/42698
https://www.kde.org/info/security/advisory-20141104-1.txt

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