Mageia alert MGASA-2015-0146 (librsync)

From:
    	     
 
Mageia Updates <buildsystem-daemon@mageia.org> 
To:
    	     
 
updates-announce@ml.mageia.org 
Subject:
    	     
 
[updates-announce] MGASA-2015-0146: Updated librsync packages fix security vulnerabilities 
Date:
    	     
 
Wed, 15 Apr 2015 11:01:53 +0200
Message-ID:
    	     
 
<20150415090154.0CAD74894B@valstar.mageia.org>
MGASA-2015-0146 - Updated librsync packages fix security vulnerabilities

Publication date: 15 Apr 2015
URL: http://advisories.mageia.org/MGASA-2015-0146.html
Type: security
Affected Mageia releases: 4
CVE: CVE-2014-8242

Description:
Updated librsync packages fix security vulnerability:

librsync before 1.0.0 used a truncated MD4 "strong" check sum to match
blocks. However, MD4 is not cryptographically strong. It's possible that an
attacker who can control the contents of one part of a file could use it to
control other regions of the file, if it's transferred using librsync/rdiff
(CVE-2014-8242).

The change to fix this is not backward compatible with older versions of
librsync. Backward compatibility can be obtained using the new `rdiff sig
--hash=md4` option or through specifying the "signature magic" in the API,
but this should not be used when either the old or new file contain
untrusted data.

Also, any applications that use the librsync library will need to be
recompiled against the updated library.  The duplicity and rdiff-backup
packages have been rebuilt for this reason.

References:
- https://bugs.mageia.org/show_bug.cgi?id=15543
- https://lists.fedoraproject.org/pipermail/package-announc...
- http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-8242

SRPMS:
- 4/core/librsync-1.0.0-2.2.mga4
- 4/core/duplicity-0.6.22-5.1.mga4
- 4/core/rdiff-backup-1.3.3-8.1.mga4