Executive Summary

Summary
Title bsd-mailx vulnerability
Informations
Name USN-2455-1 First vendor Publication 2015-01-07
Vendor Ubuntu Last vendor Modification 2015-01-07
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 14.10 - Ubuntu 14.04 LTS - Ubuntu 12.04 LTS - Ubuntu 10.04 LTS

Summary:

bsd-mailx could be made to run programs if it parsed a specially crafted email address.

Software Description: - bsd-mailx: simple mail user agent

Details:

It was discovered that bsd-mailx contained a feature that allowed syntactically valid email addresses to be treated as shell commands. A remote attacker could possibly use this issue with a valid email address to execute arbitrary commands.

This functionality has now been disabled by default, and can be re-enabled with the "expandaddr" configuration option. This update alone does not remove all possibilities of command execution. In environments where scripts use mailx to process arbitrary email addresses, it is recommended to modify them to use a "--" separator before the address to properly handle those that begin with "-".

Update instructions:

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

Ubuntu 14.10:
bsd-mailx 8.1.2-0.20131005cvs-1ubuntu0.14.10.1

Ubuntu 14.04 LTS:
bsd-mailx 8.1.2-0.20131005cvs-1ubuntu0.14.04.1

Ubuntu 12.04 LTS:
bsd-mailx 8.1.2-0.20111106cvs-1ubuntu0.1

Ubuntu 10.04 LTS:
bsd-mailx 8.1.2-0.20090911cvs-2ubuntu1.1

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

References:
http://www.ubuntu.com/usn/usn-2455-1
CVE-2014-7844

Package Information:

https://launchpad.net/ubuntu/+source/bsd-mailx/8.1.2-0.20131005cvs-1ubuntu0.14.10.1

https://launchpad.net/ubuntu/+source/bsd-mailx/8.1.2-0.20131005cvs-1ubuntu0.14.04.1
https://launchpad.net/ubuntu/+source/bsd-mailx/8.1.2-0.20111106cvs-1ubuntu0.1
https://launchpad.net/ubuntu/+source/bsd-mailx/8.1.2-0.20090911cvs-2ubuntu1.1

Original Source

Url : http://www.ubuntu.com/usn/USN-2455-1

Alert History

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0
1
Date Informations
2015-01-09 13:26:21
  • Multiple Updates
2015-01-07 21:23:37
  • First insertion