Executive Summary

Summary
Title LibYAML regression
Informations
Name USN-2098-2 First vendor Publication 2014-02-13
Vendor Ubuntu Last vendor Modification 2014-02-13
Severity (Vendor) N/A Revision N/A

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score NA
Base Score NA Environmental Score NA
impact SubScore NA Temporal Score NA
Exploitabality Sub Score NA
 
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector :
Cvss Base Score Not Defined Attack Range Not Defined
Cvss Impact Score Not Defined Attack Complexity Not Defined
Cvss Expoit Score Not Defined Authentication Not Defined
Calculate full CVSS 2.0 Vectors scores

Detail

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

- Ubuntu 13.10 - Ubuntu 12.10 - Ubuntu 12.04 LTS

Summary:

USN-2098-1 introduced a regression in LibYAML.

Software Description: - libyaml: Fast YAML 1.1 parser and emitter library

Details:

USN-2098-1 fixed a vulnerability in LibYAML. The security fix used introduced a regression that caused parsing failures for certain valid YAML files. This update fixes the problem.

We apologize for the inconvenience.

Original advisory details:

Florian Weimer discovered that LibYAML incorrectly handled certain large
yaml documents. An attacker could use this issue to cause LibYAML to crash,
resulting in a denial of service, or possibly execute arbitrary code.

Update instructions:

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

Ubuntu 13.10:
libyaml-0-2 0.1.4-2ubuntu0.13.10.2

Ubuntu 12.10:
libyaml-0-2 0.1.4-2ubuntu0.12.10.2

Ubuntu 12.04 LTS:
libyaml-0-2 0.1.4-2ubuntu0.12.04.2

After a standard system update you need to restart applications using LibYAML to make all the necessary changes.

References:
http://www.ubuntu.com/usn/usn-2098-2
http://www.ubuntu.com/usn/usn-2098-1
https://launchpad.net/bugs/1279805

Package Information:
https://launchpad.net/ubuntu/+source/libyaml/0.1.4-2ubuntu0.13.10.2
https://launchpad.net/ubuntu/+source/libyaml/0.1.4-2ubuntu0.12.10.2
https://launchpad.net/ubuntu/+source/libyaml/0.1.4-2ubuntu0.12.04.2

Original Source

Url : http://www.ubuntu.com/usn/USN-2098-2

Alert History

If you want to see full details history, please login or register.
0
1
Date Informations
2014-02-17 12:03:04
  • Multiple Updates
2014-02-13 21:19:30
  • First insertion