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CVE Database

CVE-2011-0542

Impact: Low
Public: 2010-11-02
Bugzilla: 651183: CVE-2010-3879 CVE-2011-0541 CVE-2011-0542 CVE-2011-0543 fuse: unprivileged user can unmount arbitrary locations via symlink attack

Details

The MITRE CVE dictionary describes this issue as:

fusermount in fuse 2.8.5 and earlier does not perform a chdir to / before performing a mount or umount, which allows local users to unmount arbitrary directories via unspecified vectors.

Find out more about CVE-2011-0542 from the MITRE CVE dictionary and NIST NVD.

Statement

The Red Hat Security Response Team has rated this issue as having low security impact. On Red Hat Enterprise Linux 5 and 6, a user must be a member of the 'fuse' group in order to use FUSE. Due to the risks associated with fixing this bug on Red Hat Enterprise Linux 5, and because of the group restrictions in place, we currently have no plans to fix this flaw in Red Hat Enterprise Linux 5.

CVSS v2 metrics

Base Score: 2.6
Base Metrics: AV:L/AC:H/Au:N/C:N/I:P/A:P
Access Vector: Local
Access Complexity: High
Authentication: None
Confidentiality Impact: None
Integrity Impact: Partial
Availability Impact: Partial

Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).

Red Hat security errata

Platform Errata Release Date
Red Hat Enterprise Linux version 6 (fuse) RHSA-2011:1083 July 20, 2011

External References

This page is generated automatically and has not been checked for errors or omissions.

For clarification or corrections please contact the Red Hat Security Response Team.