Scientific Linux SL5.x: 2007-1320 Critical Xen Security Issue

Date: Thu, 4 Oct 2007 10:38:51 -0500
Reply-To: Connie Sieh 
Sender: Security Errata for Scientific Linux
 
From: Connie Sieh 
Subject: Security ERRATA for xen on SL5.x i386/x86_64
Comments: To: scientific 

Synopsis: Important: xen security update

CVE Names: CVE-2007-1320
 	CVE-2007-1321
 	CVE-2007-4993

Detail:

Joris van Rantwijk found a flaw in the Pygrub utility which is used as a
boot loader for guest domains. A malicious local administrator of a guest
domain could create a carefully crafted grub.conf file which would trigger
the execution of arbitrary code outside of that domain. (CVE-2007-4993)

Tavis Ormandy discovered a heap overflow flaw during video-to-video copy
operations in the Cirrus VGA extension code used in Xen. A malicious local
administrator of a guest domain could potentially trigger this flaw and
execute arbitrary code outside of the domain. (CVE-2007-1320)

Tavis Ormandy discovered insufficient input validation leading to a heap
overflow in the Xen NE2000 network driver. If the driver is in use, a
malicious local administrator of a guest domain could potentially trigger
this flaw and execute arbitrary code outside of the domain. Xen does not
use this driver by default. (CVE-2007-1321)

SL5.x

 SRPMS:
 	xen-3.0.3-25.0.4.el5.src.rpm

 i386:
 	xen-3.0.3-25.0.4.el5.i386.rpm
 	xen-devel-3.0.3-25.0.4.el5.i386.rpm
 	xen-libs-3.0.3-25.0.4.el5.i386.rpm

 x86_64:
 	xen-3.0.3-25.0.4.el5.x86_64.rpm
 	xen-devel-3.0.3-25.0.4.el5.i386.rpm
 	xen-devel-3.0.3-25.0.4.el5.x86_64.rpm
 	xen-libs-3.0.3-25.0.4.el5.i386.rpm
 	xen-libs-3.0.3-25.0.4.el5.x86_64.rpm

-Connie Sieh
-Troy Dawson