Vulnerability CVE-2011-0543
Published: 2011-09-02   Modified: 2012-02-13

Description:
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.

Type:

CWE-264

 (Permissions, Privileges, and Access Controls)

CVSS2 => (AV:L/AC:M/Au:N/C:N/I:P/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
3.3/10
4.9/10
3.4/10
Exploit range
Attack complexity
Authentication
Local
Medium
No required
Confidentiality impact
Integrity impact
Availability impact
None
Partial
Partial
Affected software
FUSE -> FUSE 

 References:
http://www.openwall.com/lists/oss-security/2011/02/08/4
http://www.openwall.com/lists/oss-security/2011/02/03/5
http://www.openwall.com/lists/oss-security/2011/02/02/2
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
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