Bourne-Again Shell (Bash) Remote Code Execution Vulnerability

Original release date: September 24, 2014 | Last revised: September 26, 2014

US-CERT is aware of a Bash vulnerability affecting Unix-based operating systems such as Linux and Mac OS X. Exploitation of this vulnerability may allow a remote attacker to execute arbitrary code on an affected system.

The flaw was originally assigned CVE-2014-6271, but it was later discovered that the patch had an issue in the parser and did not fully address the problem. MITRE later assigned CVE-2014-7169 to cover the remaining problems after the application of the first patch.

US-CERT recommends users and administrators review TA14-268AVulnerability Note VU#252743 and the Redhat Security Blog for additional details and to refer to their respective Linux or Unix-based OS vendor(s) for an appropriate patch. A GNU Bash patch is also available for experienced users and administrators to implement.

Operating systems with updates include:

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