Bug 893728 (CVE-2012-2669)

Summary:	CVE-2012-2669 hypervkvpd: fails to check origin of netlink messages
Product:	[Other] Security Response	Reporter:	Vincent Danen <vdanen>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED UPSTREAM	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	thozza
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:	2013-01-09 19:14:09 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:
Bug Blocks:	877573

Description Vincent Danen 2013-01-09 19:12:28 UTC

The main function in tools/hv/hv_kvp_daemon.c in hypervkvpd, as distributed in the Linux kernel before 3.4.5, does not validate the origin of Netlink messages, which allows local users to spoof Netlink communication via a crafted connector message.

This is similar to CVE-2012-5532 (see bug #877572 for some of the confusion that happened with regards to the two CVEs).

This is corrected upstream via:

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=bcc2c9c3fff859e0eb019fe6fec26f9b8eba795c

And the fixed code is present in hypervkvpd-0-0.7.el5 as provided by Red Hat Enterprise Linux 5.


Statement:

Not vulnerable. This issue did not affect the versions of hypvervkvpd as shipped with Red Hat Enterprise Linux 5.