Executive Summary

Summary
Title libssh regression
Informations
NameUSN-3795-3First vendor Publication2018-11-29
VendorUbuntuLast vendor Modification2018-11-29
Severity (Vendor) N/ARevisionN/A

Security-Database Scoring CVSS v2

Cvss vector :
Cvss Base ScoreN/AAttack RangeN/A
Cvss Impact ScoreN/AAttack ComplexityN/A
Cvss Expoit ScoreN/AAuthenticationN/A
Calculate full CVSS 2.0 Vectors scores

Detail

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 18.10 - Ubuntu 18.04 LTS - Ubuntu 16.04 LTS - Ubuntu 14.04 LTS

Summary:

USN-3795-1 and USN-3795-2 introduced a regression in libssh.

Software Description: - libssh: A tiny C SSH library

Details:

USN-3795-1 and USN-3795-2 fixed a vulnerability in libssh. The upstream fix introduced a regression. This update fixes the problem.

Original advisory details:

Peter Winter-Smith discovered that libssh incorrectly handled
authentication when being used as a server. A remote attacker could use
this issue to bypass authentication without any credentials.

Update instructions:

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

Ubuntu 18.10:
libssh-4 0.8.1-1ubuntu0.3

Ubuntu 18.04 LTS:
libssh-4 0.8.0~20170825.94fa1e38-1ubuntu0.2

Ubuntu 16.04 LTS:
libssh-4 0.6.3-4.3ubuntu0.2

Ubuntu 14.04 LTS:
libssh-4 0.6.1-0ubuntu3.5

After a standard system update you need to reboot your computer to make all the necessary changes.

References:
https://usn.ubuntu.com/usn/usn-3795-3
https://usn.ubuntu.com/usn/usn-3795-1
https://launchpad.net/bugs/1805348

Package Information:
https://launchpad.net/ubuntu/+source/libssh/0.8.1-1ubuntu0.3
https://launchpad.net/ubuntu/+source/libssh/0.8.0~20170825.94fa1e38-1ubuntu0.2
https://launchpad.net/ubuntu/+source/libssh/0.6.3-4.3ubuntu0.2
https://launchpad.net/ubuntu/+source/libssh/0.6.1-0ubuntu3.5

Original Source

Url : http://www.ubuntu.com/usn/USN-3795-3

Alert History

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0
DateInformations
2018-11-29 21:18:55
  • First insertion