Bug 464450 (CVE-2008-3833)

Summary:	CVE-2008-3833 kernel: remove SUID when splicing into an inode
Product:	[Other] Security Response	Reporter:	Eugene Teo (Security Response) <eteo>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	high	Docs Contact:
Priority:	high
Version:	unspecified	CC:	dhoward, esandeen, jpirko, kseifried, lwang, pstyles
Target Milestone:	---
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2011-09-30 19:46:13 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:	464451, 464452
Bug Blocks:

Description Eugene Teo (Security Response) 2008-09-29 07:36:07 UTC

Description of problem:
Originally from Mark Fasheh <mark.fasheh>

generic_file_splice_write() does not remove S_ISUID or S_ISGID. This is inconsistent with the way we generally write to files.

Proposed upstream patch:
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=8c34e2d63231d4bf4852bac8521883944d770fe3

Comment 2 Eugene Teo (Security Response) 2008-09-29 08:03:11 UTC

This requires should_remove_suid(), and __remove_suid() from bug #463661.

Comment 5 Eugene Teo (Security Response) 2008-10-03 00:53:43 UTC

This bug has similar consequences as CVE-2008-4210.

Comment 6 Eugene Teo (Security Response) 2008-10-03 00:57:28 UTC

Reference:
http://article.gmane.org/gmane.comp.security.oss.general/1008

Comment 10 Kurt Seifried 2011-09-30 19:46:13 UTC

This issue has been addressed in following products:

  Red Hat Linux Enterprise 5
  Red Hat Linux Enterprise 5.2.z
  
Via RHSA-2008:0957 available at https://rhn.redhat.com/errata/RHSA-2008-0957.html