Bug 970631 (CVE-2013-2194, CVE-2013-2195, CVE-2013-2196)

Summary: CVE-2013-2194 CVE-2013-2195 CVE-2013-2196 xen: Multiple vulnerabilities in libelf PV kernel handling
Product: [Other] Security Response Reporter: Petr Matousek <pmatouse>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED WONTFIX QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedCC: drjones, imammedo, jforbes, kraxel, lersek, m.a.young, mrezanin, pbonzini, rkrcmar, virt-maint, xen-maint
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard: impact=important,public=20130603,reported=20130603,source=upstream,cvss2=6.5/AV:A/AC:H/Au:S/C:C/I:C/A:C,rhel-5/xen=affected,fedora-all/xen=affected
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2014-06-11 05:06:34 EDT Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---
Bug Depends On: 970637, 970638, 970640    
Bug Blocks: 970653    
Attachments:
Description Flags
Original Xen Security Advisory #55v4 none

Description Petr Matousek 2013-06-04 09:30:13 EDT
The ELF parser used by the Xen tools to read domains' kernels and
construct domains has multiple integer overflows, pointer dereferences
based on calculations from unchecked input values, and other problems.

A malicious PV domain administrator who can specify their own kernel
can escalate their privilege to that of the domain construction tools
(i.e., normally, to control of the host).

References:

http://lists.xen.org/archives/html/xen-devel/2013-06/msg00223.html

Acknowledgements:

Red Hat would like to thank the Xen project for reporting this issue.
Comment 4 Petr Matousek 2013-06-04 09:37:52 EDT
Created xen tracking bugs for this issue

Affects: fedora-all [bug 970640]
Comment 5 Petr Matousek 2013-06-07 13:06:16 EDT
Update:

http://www.openwall.com/lists/oss-security/2013/06/07/5
Comment 8 Fedora Update System 2013-06-13 02:50:47 EDT
xen-4.2.2-6.fc19 has been pushed to the Fedora 19 stable repository.  If problems still persist, please make note of it in this bug report.
Comment 9 Fedora Update System 2013-06-13 22:28:42 EDT
xen-4.2.2-6.fc18 has been pushed to the Fedora 18 stable repository.  If problems still persist, please make note of it in this bug report.
Comment 10 Petr Matousek 2013-06-14 13:00:13 EDT
Created attachment 761352 [details]
Original Xen Security Advisory #55v4

Updated Xen Security Advisory with fixed patch series git changeset ids in xen.git.

Reference:

http://seclists.org/oss-sec/2013/q2/561
Comment 11 Fedora Update System 2013-06-16 01:44:27 EDT
xen-4.1.5-5.fc17 has been pushed to the Fedora 17 stable repository.  If problems still persist, please make note of it in this bug report.
Comment 13 Fedora Update System 2013-06-23 23:24:33 EDT
xen-4.2.2-7.fc18 has been pushed to the Fedora 18 stable repository.  If problems still persist, please make note of it in this bug report.
Comment 14 Fedora Update System 2013-06-23 23:26:09 EDT
xen-4.1.5-6.fc17 has been pushed to the Fedora 17 stable repository.  If problems still persist, please make note of it in this bug report.
Comment 15 Fedora Update System 2013-06-29 14:46:58 EDT
xen-4.2.2-7.fc19 has been pushed to the Fedora 19 stable repository.  If problems still persist, please make note of it in this bug report.
Comment 16 Petr Matousek 2014-06-11 05:06:34 EDT
Statement:

The risks associated with fixing this issue are greater than its security impact. This issue is not currently planned to be addressed in future xen updates for Red Hat Enterprise Linux 5.