Mageia alert MGASA-2016-0393 (bash)

From:
    	     
 
Mageia Updates <buildsystem-daemon@mageia.org> 
To:
    	     
 
updates-announce@ml.mageia.org 
Subject:
    	     
 
[updates-announce] MGASA-2016-0393: Updated bash packages fix security vulnerability 
Date:
    	     
 
Mon, 21 Nov 2016 23:18:32 +0100
Message-ID:
    	     
 
<20161121221832.859DD9F7A2@duvel.mageia.org>
MGASA-2016-0393 - Updated bash packages fix security vulnerability

Publication date: 21 Nov 2016
URL: http://advisories.mageia.org/MGASA-2016-0393.html
Type: security
Affected Mageia releases: 5
CVE: CVE-2016-0634,
     CVE-2016-7543

Description:
A vulnerability was found in a way bash expands the $HOSTNAME. Injecting
the hostname with malicious code would cause it to run each time bash
expanded \h in the prompt string (CVE-2016-0634).

Shells running as root inherited PS4 from the environment, allowing PS4
expansion performing command substitution. Local attacker could gain
arbitrary code execution via bogus setuid binaries using system()/popen()
by specially crafting SHELLOPTS+PS4 environment variables (CVE-2016-7543)

References:
- https://bugs.mageia.org/show_bug.cgi?id=19462
-
https://lists.fedoraproject.org/archives/list/package-ann...
-
https://lists.fedoraproject.org/archives/list/package-ann...
- http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-0634
- http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-7543

SRPMS:
- 5/core/bash-4.3-48.2.mga5