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Ubuntu 14.04 LTS USN-2478-1 Critical: libssh Denial Of Service

ubuntu
Calendar Grey January 19, 2015
Dist Ubuntu Esm H88
A vulnerability in libssh could lead to system instability if targeted network packets are sent to Ubuntu machines; crucial patch information follows.
libssh could be made to crash if it received specially crafted network traffic.

Summary

libssh could be made to crash if it received specially crafted network

traffic.

Software Description:

- libssh: A tiny C SSH library

Details:

It was discovered that libssh incorrectly handled certain kexinit packets.

A remote attacker could possibly use this issue to cause libssh to crash,

resulting in a denial of service.

Topics%20covered

Topics Covered

security advisory Ubuntu update instructions critical severity network exploit Denial Of Service libssh

Update Instructions

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 14.10:
  libssh-4                        0.6.3-2ubuntu1.1

Ubuntu 14.04 LTS:
  libssh-4                        0.6.1-0ubuntu3.1

Ubuntu 12.04 LTS:
  libssh-4                        0.5.2-1ubuntu0.12.04.4

In general, a standard system update will make all the necessary changes.

References

https://ubuntu.com/security/notices/USN-2478-1

CVE-2014-8132

Severity
critical
Lowest
Low
Medium
High
Critical

January 19, 2015

Topics%20covered

Topics Covered

security advisory Ubuntu update instructions critical severity network exploit Denial Of Service libssh

Package Information

https://launchpad.net/ubuntu/+source/libssh/0.6.3-2ubuntu1.1
https://launchpad.net/ubuntu/+source/libssh/0.6.1-0ubuntu3.1
https://launchpad.net/ubuntu/+source/libssh/0.5.2-1ubuntu0.12.04.4

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