Bug 712762 (CVE-2011-2473)

Summary:	CVE-2011-2473 oprofile: do_dump_data function symlink attack via opd_pipe
Product:	[Other] Security Response	Reporter:	Huzaifa S. Sidhpurwala <huzaifas>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED WONTFIX	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	wcohen
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:	2011-07-29 10:41:55 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:	701504, 701505, 701506, 701507, 701508
Bug Blocks:	711681

Description Huzaifa S. Sidhpurwala 2011-06-13 03:59:00 UTC

Common Vulnerabilities and Exposures assigned an identifier CVE-2011-2473 to
the following vulnerability:

Name: CVE-2011-2473
URL: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-2473
Assigned: 20110609
Reference: URL:http://openwall.com/lists/oss-security/2011/05/03/1
Reference: URL:http://openwall.com/lists/oss-security/2011/05/10/6
Reference: URL:http://openwall.com/lists/oss-security/2011/05/10/7
Reference: URL:http://openwall.com/lists/oss-security/2011/05/11/1
Reference: CONFIRM:http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=624212
Reference: DEBIAN:DSA-2254
Reference: URL:http://www.debian.org/security/2011/dsa-2254

The do_dump_data function in utils/opcontrol in OProfile 0.9.6 and
earlier might allow local users to create or overwrite arbitrary files
via a crafted --session-dir argument in conjunction with a symlink
attack on the opd_pipe file, a different vulnerability than
CVE-2011-1760.

Comment 2 Tomas Hoger 2011-06-15 09:45:02 UTC

The fix that was committed upstream is:
http://oprofile.git.sourceforge.net/git/gitweb.cgi?p=oprofile/oprofile;a=commitdiff;h=718de99bbea1e912cea175522fb1b86c72db8de9

It should be noted that this fix does not completely address this issue.  There's still a race condition, which may allow attacker to replace pipe file with a symlink after the opd_pipe type was checked.

Comment 5 Huzaifa S. Sidhpurwala 2011-07-29 10:36:35 UTC

Statement:

Red Hat currently does not plan to address this issue. For details refer to:
https://bugzilla.redhat.com/show_bug.cgi?id=700883#c18