Bug 567813 (CVE-2010-1088)

Summary: CVE-2010-1088 kernel: fix LOOKUP_FOLLOW on automount "symlinks"
Product: [Other] Security Response Reporter: Eugene Teo (Security Response) <eteo>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED ERRATA QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: arozansk, bhu, davej, dhoward, gbarros, jlayton, jpirko, kmcmartin, lgoncalv, lwang, plyons, pmatouse, tao, tcallawa, williams
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: 2012-03-28 08:45:39 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: 567814, 567815, 567816, 567817    
Bug Blocks:    

Description Eugene Teo (Security Response) 2010-02-24 01:08:56 UTC 
Description of problem:
Make sure that automount "symlinks" are followed regardless of LOOKUP_FOLLOW; it should have no effect on them.

Upstream commit:
http://git.kernel.org/linus/ac278a9c505092dd82077a2446af8f9fc0d9c095

For this vulnerability to work, you need the support for O_NOFOLLOW (predates 2.6.12), openat (2.6.16 onwards) and use by NFS of 'trapdoor mounts' (2.6.18 onwards).
Comment 7 errata-xmlrpc 2010-07-01 18:28:03 UTC 
This issue has been addressed in following products:

  Red Hat Enterprise Linux 5

Via RHSA-2010:0504 https://rhn.redhat.com/errata/RHSA-2010-0504.html
Comment 9 errata-xmlrpc 2010-08-17 15:53:15 UTC 
This issue has been addressed in following products:

  MRG for RHEL-5

Via RHSA-2010:0631 https://rhn.redhat.com/errata/RHSA-2010-0631.html