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)
OVAL:	com.redhat.rhsa-20070542.xml
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)

SRPMS:
mcstrans-0.2.6-1.el5.src.rpm	`11f10d2f7a344eee82eec893731a4d22`

IA-32:
mcstrans-0.2.6-1.el5.i386.rpm File outdated by: RHBA-2009:0231	`ade7ed8667b6aa159fa3218c2f842236`

IA-64:
mcstrans-0.2.6-1.el5.ia64.rpm File outdated by: RHBA-2009:0231	`b798e7bb0c57b63d8537bb49292211d5`

PPC:
mcstrans-0.2.6-1.el5.ppc.rpm File outdated by: RHBA-2009:0231	`a0b839b70b33e73d86f7d3d05811fdf5`

s390x:
mcstrans-0.2.6-1.el5.s390x.rpm File outdated by: RHBA-2009:0231	`fdc405c2b94baa8de61eedabbe93019b`

x86_64:
mcstrans-0.2.6-1.el5.x86_64.rpm File outdated by: RHBA-2009:0231	`0db9bf6e576084bb343f826b4f0e6c7b`

Red Hat Enterprise Linux Desktop (v. 5 client)

SRPMS:
mcstrans-0.2.6-1.el5.src.rpm	`11f10d2f7a344eee82eec893731a4d22`

IA-32:
mcstrans-0.2.6-1.el5.i386.rpm File outdated by: RHBA-2009:0231	`ade7ed8667b6aa159fa3218c2f842236`

x86_64:
mcstrans-0.2.6-1.el5.x86_64.rpm File outdated by: RHBA-2009:0231	`0db9bf6e576084bb343f826b4f0e6c7b`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

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-4570
http://www.redhat.com/security/updates/classification/#low

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/