Vulnerability Monitor

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CVE-2010-2071

The btrfs_xattr_set_acl function in fs/btrfs/acl.c in btrfs in the Linux kernel 2.6.34 and earlier does not check file ownership before setting an ACL, which allows local users to bypass file permissions by setting arbitrary ACLs, as demonstrated using setfacl.

Published

2010-06-16T20:30:02.513

Last Modified

2025-04-11T00:51:21.963

Status

Deferred

Source

[email protected]

Severity

CVSSv2: 4.6 (MEDIUM)

CVSSv2 Vector

AV:L/AC:L/Au:N/C:P/I:P/A:P

Access Vector: LOCAL
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: PARTIAL
Integrity Impact: PARTIAL
Availability Impact: PARTIAL

Exploitability Score

3.9

Impact Score

6.4

Weaknesses

Type: Primary
CWE-264

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Operating System	linux	linux_kernel	≤ 2.6.34	Yes

References

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commitdiff%3Bh=2f26afba ([email protected])
http://lkml.org/lkml/2010/5/17/544 Exploit, Patch, Third Party Advisory ([email protected])
http://www.openwall.com/lists/oss-security/2010/06/11/3 Mailing List, Third Party Advisory ([email protected])
http://www.openwall.com/lists/oss-security/2010/06/14/2 Mailing List, Third Party Advisory ([email protected])
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commitdiff%3Bh=2f26afba (af854a3a-2127-422b-91ae-364da2661108)
http://lkml.org/lkml/2010/5/17/544 Exploit, Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.openwall.com/lists/oss-security/2010/06/11/3 Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.openwall.com/lists/oss-security/2010/06/14/2 Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)