Information exposure in Linux kernel udf

1) Information exposure

EUVDB-ID: #VU92527

Risk: Low

CVSSv4.0: 1.1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2012-6548

CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor

Exploit availability: No

Description

The vulnerability allows a local user to gain access to sensitive information.

The vulnerability exists due to information exposure error within the udf_encode_fh() function in fs/udf/namei.c. A local user can gain access to sensitive information.

Mitigation

Install update from vendor's repository.

Vulnerable software versions

Linux kernel: All versions

CPE2.3

• cpe:2.3:o:linux_foundation:linux_kernel:*:*:*:*:*:*:*:*

External links

https://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=0143fc5e9f6f5aad4764801015bc8d4b4a278200
https://lists.opensuse.org/opensuse-security-announce/2013-07/msg00018.html
https://rhn.redhat.com/errata/RHSA-2013-1051.html
https://www.mandriva.com/security/advisories?name=MDVSA-2013:176
https://www.openwall.com/lists/oss-security/2013/03/05/13
https://www.ubuntu.com/usn/USN-1805-1
https://www.ubuntu.com/usn/USN-1808-1
https://www.ubuntu.com/usn/USN-1809-1
https://www.ubuntu.com/usn/USN-1811-1
https://www.ubuntu.com/usn/USN-1812-1
https://www.ubuntu.com/usn/USN-1813-1
https://www.ubuntu.com/usn/USN-1814-1
https://github.com/torvalds/linux/commit/0143fc5e9f6f5aad4764801015bc8d4b4a278200
https://www.kernel.org/pub/linux/kernel/v3.x/patch-3.6.bz2

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

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