Permissions, Privileges, and Access Controls in Fuse - CVE-2011-0543
Published: September 3, 2011 / Updated: August 11, 2020
Vulnerability identifier: #VU44759
CSH Severity: Medium
CVSS v4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2011-0543
CWE-ID: CWE-264
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote non-authenticated attacker to manipulate or delete data.
Certain legacy functionality in fusermount in fuse 2.8.5 and earlier, when util-linux does not support the --no-canonicalize option, allows local users to bypass intended access restrictions and unmount arbitrary directories via a symlink attack.
Affected software
Fuse
How to mitigate CVE-2011-0543
Install update from vendor's website.
External References
- http://fuse.git.sourceforge.net/git/gitweb.cgi?p=fuse/fuse;a=commit;h=cbd3a2a84068aae6e3fe32939d88470d712dbf47
- http://lists.opensuse.org/opensuse-security-announce/2011-04/msg00000.html
- http://www.openwall.com/lists/oss-security/2011/02/02/2
- http://www.openwall.com/lists/oss-security/2011/02/03/5
- http://www.openwall.com/lists/oss-security/2011/02/08/4