Bug 254040 (CVE-2007-4135) - CVE-2007-4135 nfs-utils-lib NFSv4 user id mapping flaw
Summary: CVE-2007-4135 nfs-utils-lib NFSv4 user id mapping flaw
Alias: CVE-2007-4135
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
Depends On: 254041 254042
TreeView+ depends on / blocked
Reported: 2007-08-23 19:15 UTC by Josh Bressers
Modified: 2019-09-29 12:20 UTC (History)
1 user (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Last Closed: 2010-12-22 22:19:59 UTC

Attachments (Terms of Use)
Proposed patch (731 bytes, patch)
2007-08-23 19:34 UTC, Josh Bressers
no flags Details | Diff

System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2007:0951 0 normal SHIPPED_LIVE Important: nfs-utils-lib security update 2007-10-02 20:55:13 UTC

Description Josh Bressers 2007-08-23 19:15:43 UTC
Tony Ernst from SGI has discovered a flaw in the way nfsidmap maps NFSv4 unknown
uids.  If an unknown user ID is encountered on an NFSv4 mounted filesystem, the
files will default to being owned by root rather than nobody.  This could
potentially be used to elevate a users privileges.  This is fixed in nfsidmap
version 0.17.

Comment 2 Josh Bressers 2007-08-23 19:34:20 UTC
Created attachment 172372 [details]
Proposed patch

Comment 3 Tomas Hoger 2007-09-05 15:33:26 UTC
Issue is public now, removing embargo.

Comment 6 Vincent Danen 2010-12-22 22:19:59 UTC
This was addressed via:

Red Hat Enterprise Linux version 5 (RHSA-2007:09510

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