Security Advisory Low: mcstrans security and bug fix update

Advisory: RHSA-2007:0542-6
Type: Security Advisory
Severity: Low
Issued on: 2007-11-07
Last updated on: 2007-11-07
Affected Products: Red Hat Enterprise Linux (v. 5 server)
Red Hat Enterprise Linux Desktop (v. 5 client)
CVEs (cve.mitre.org): CVE-2007-4570

Details

An updated mcstrans package that fixes a security issue and a bug is now
available.

This update has been rated as having low security impact by the Red Hat
Security Response Team.

mcstrans is the translation daemon used on SELinux machines to translate
program context into human readable form.

An algorithmic complexity weakness was found in the way the mcstrans daemon
handled ranges of compartments in sensitivity labels. A local user could
trigger this flaw causing mctransd to temporarily stop responding to other
requests; a partial denial of service. (CVE-2007-4570)

This update also fixes a problem where the mcstrans daemon was preventing
SSH connections into an SELinux box, that was running a Multi-Level
Security (MLS) Policy with multiple categories.

Users of mcstrans are advised to upgrade to this updated package, which
resolves this issue.


Solution

Before applying this update, make sure that all previously-released
errata relevant to your system have been applied.

This update is available via Red Hat Network. Details on how to use
the Red Hat Network to apply this update are available at
http://kbase.redhat.com/faq/FAQ_58_10188

Updated packages

Red Hat Enterprise Linux (v. 5 server)

IA-32:
mcstrans-0.2.6-1.el5.i386.rpm
File outdated by:  RHBA-2009:0231
    MD5: ade7ed8667b6aa159fa3218c2f842236
 
IA-64:
mcstrans-0.2.6-1.el5.ia64.rpm
File outdated by:  RHBA-2009:0231
    MD5: b798e7bb0c57b63d8537bb49292211d5
 
PPC:
mcstrans-0.2.6-1.el5.ppc.rpm
File outdated by:  RHBA-2009:0231
    MD5: a0b839b70b33e73d86f7d3d05811fdf5
 
s390x:
mcstrans-0.2.6-1.el5.s390x.rpm
File outdated by:  RHBA-2009:0231
    MD5: fdc405c2b94baa8de61eedabbe93019b
 
x86_64:
mcstrans-0.2.6-1.el5.x86_64.rpm
File outdated by:  RHBA-2009:0231
    MD5: 0db9bf6e576084bb343f826b4f0e6c7b
 
Red Hat Enterprise Linux Desktop (v. 5 client)

IA-32:
mcstrans-0.2.6-1.el5.i386.rpm
File outdated by:  RHBA-2009:0231
    MD5: ade7ed8667b6aa159fa3218c2f842236
 
x86_64:
mcstrans-0.2.6-1.el5.x86_64.rpm
File outdated by:  RHBA-2009:0231
    MD5: 0db9bf6e576084bb343f826b4f0e6c7b
 
(The unlinked packages above are only available from the Red Hat Network)

Bugs fixed (see bugzilla for more information)

228398 - LSPP: Not able to ssh into the machine with multiple categories
288201 - CVE-2007-4570 mctransd DoS


References



These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from:
https://www.redhat.com/security/team/key/#package

The Red Hat security contact is secalert@redhat.com. More contact details at http://www.redhat.com/security/team/contact/