Arch Linux ASA-201501-12: Medium Severity Libssh Denial Of Service

Arch Linux Security Advisory ASA-201501-12
=========================================
Severity: Medium
Date    : 2015-01-19
CVE-ID  : CVE-2014-8132
Package : libssh
Type    : denial of service
Remote  : Yes
Link    : https://wiki.archlinux.org/title/CVE

Summary
======
The package libssh before version 0.6.4-1 is vulnerable to denial of
service.

Resolution
=========
Upgrade to 0.6.4-1.

# pacman -Syu "libssh>=0.6.4-1"

The problem has been fixed upstream in version 0.6.4.

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

Description
==========
It was discovered that a double free vulnerability in the
ssh_packet_kexinit function in kex.c allows remote attackers to cause a
denial of service via a crafted kexinit packet.

Impact
=====
A remote attacker is able to send a specially crafted kexinit packet
causing libssh to crash, resulting in a denial of service.

References
=========
https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2014-8132
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2014-8132