Bug 906323 (CVE-2013-0215)

Summary:	CVE-2013-0215 xen: oxenstored incorrect handling of certain Xenbus ring states
Product:	[Other] Security Response	Reporter:	Petr Matousek <pmatouse>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED NOTABUG	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	jlieskov, security-response-team
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2019-06-10 10:59:59 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	907888
Bug Blocks:	906326

Description Petr Matousek 2013-01-31 13:20:16 UTC

The oxenstored daemon (the ocaml version of the xenstore daemon) does
not correctly handle unusual or malicious contents in the xenstore
ring.  A malicious guest can exploit this to cause oxenstored to read
past the end of the ring (and very likely crash) or to allocate large
amounts of RAM.

A malicious guest administrator can mount a denial of service attack
affecting domain control and management functions.

Acknowledgements:

Red Hat would like to thank the Xen project for reporting this issue.

Comment 2 Petr Matousek 2013-01-31 13:26:11 UTC

Statement:

This issue did not affect the versions of the xen package as shipped with Red Hat Enterprise Linux 5.

Comment 3 Petr Matousek 2013-02-05 13:29:35 UTC

Created xen tracking bugs for this issue

Affects: fedora-all [bug 907888]

Comment 4 Fedora Update System 2013-02-16 01:23:59 UTC

xen-4.1.4-4.fc17 has been pushed to the Fedora 17 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 5 Fedora Update System 2013-02-18 06:49:21 UTC

xen-4.2.1-7.fc18 has been pushed to the Fedora 18 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 6 Jan Lieskovsky 2013-03-07 12:31:36 UTC

Relevant upstream patches are as follows:
  http://xenbits.xen.org/gitweb/?p=xen.git;a=commitdiff;h=40f9c5e0a6d15b4ca1f6d4ed3a46f0871520eab5
  http://xenbits.xen.org/gitweb/?p=xen.git;a=commitdiff;h=61401264eb00fae4ee4efc8e9a5067449283207b