Permissions, Privileges, and Access Controls in Linux kernel

1) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU43962

Risk: Low

CVSSv3.1: 3.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2011-0006

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to manipulate data.

The ima_lsm_rule_init function in security/integrity/ima/ima_policy.c in the Linux kernel before 2.6.37, when the Linux Security Modules (LSM) framework is disabled, allows local users to bypass Integrity Measurement Architecture (IMA) rules in opportunistic circumstances by leveraging an administrator's addition of an IMA rule for LSM.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Linux kernel: 2.6.36.1 - 2.6.36.3

External links

http://ftp.osuosl.org/pub/linux/kernel/v2.6/ChangeLog-2.6.37
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=867c20265459d30a01b021a9c1e81fb4c5832aa9
http://www.openwall.com/lists/oss-security/2011/01/06/18
http://bugzilla.redhat.com/show_bug.cgi?id=667912
http://github.com/torvalds/linux/commit/867c20265459d30a01b021a9c1e81fb4c5832aa9

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.