[arch-security] [ASA-201501-12] libssh: denial of service

[Levente Polyak]

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/index.php/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://www.libssh.org/2014/12/19/libssh-0-6-4-security-and-bugfix-release/
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2014-8132

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