Bug 464450 (CVE-2008-3833) - CVE-2008-3833 kernel: remove SUID when splicing into an inode
Summary: CVE-2008-3833 kernel: remove SUID when splicing into an inode
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2008-3833
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 464451 464452
Blocks:
TreeView+ depends on / blocked
 
Reported: 2008-09-29 07:36 UTC by Eugene Teo (Security Response)
Modified: 2021-11-12 19:52 UTC (History)
6 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2011-09-30 19:46:13 UTC
Embargoed:

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Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2008:0957 0 normal SHIPPED_LIVE Important: kernel security and bug fix update 2008-11-12 09:34:44 UTC

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
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