Mageia alert MGASA-2016-0261 (sudo)

From:
    	     
 
Mageia Updates <buildsystem-daemon@mageia.org> 
To:
    	     
 
updates-announce@ml.mageia.org 
Subject:
    	     
 
[updates-announce] MGASA-2016-0261: Updated sudo packages fix security vulnerability 
Date:
    	     
 
Tue, 26 Jul 2016 23:16:56 +0200
Message-ID:
    	     
 
<20160726211656.89F4D9F76A@duvel.mageia.org>
MGASA-2016-0261 - Updated sudo packages fix security vulnerability

Publication date: 26 Jul 2016
URL: http://advisories.mageia.org/MGASA-2016-0261.html
Type: security
Affected Mageia releases: 5
CVE: CVE-2015-8239

Description:
A vulnerability in functionality for adding support of SHA-2 digests along
with the command was found. The sudoers plugin performs this digest
verification while matching rules, and later independently calls execve()
to execute the binary. This results in a race condition if the digest
functionality is used as suggested (in fact, the rules are matched before
the user is prompted for a password, so there is not negligible time frame
to replace the binary from underneath sudo) (CVE-2015-8239).

References:
- https://bugs.mageia.org/show_bug.cgi?id=18989
-
https://lists.fedoraproject.org/archives/list/package-ann...
- http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-8239

SRPMS:
- 5/core/sudo-1.8.17p1-1.mga5