CVE-2014-9731

Impact:
Low
Public Date:
2014-12-18
CWE:
CWE-200
Bugzilla:
1228220: CVE-2014-9731 Kernel: fs: udf: information leakage when reading symlink
A path length checking flaw was found in Linux kernels built with UDF file system (CONFIG_UDF_FS) support. An attacker able to mount a corrupted/malicious UDF file system image could use this flaw to leak kernel memory to user-space.

Find out more about CVE-2014-9731 from the MITRE CVE dictionary dictionary and NIST NVD.

Statement

This issue affects the versions of the Linux kernel as shipped with
Red Hat Enterprise Linux 5, 6, 7 and Red Hat Enterprise MRG 2.

CVSS v2 metrics

NOTE: The following CVSS v2 metrics and score provided are preliminary and subject to review.

Base Score 1.9
Base Metrics AV:L/AC:M/Au:N/C:P/I:N/A:N
Access Vector Local
Access Complexity Medium
Authentication None
Confidentiality Impact Partial
Integrity Impact None
Availability Impact None

Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).

Affected Packages State

Platform Package State
Red Hat Enterprise MRG 2 realtime-kernel Will not fix
Red Hat Enterprise Linux 7 kernel-rt Will not fix
Red Hat Enterprise Linux 7 kernel Will not fix
Red Hat Enterprise Linux 6 kernel Will not fix
Red Hat Enterprise Linux 5 kernel Will not fix

Acknowledgements

Red Hat would like to thank Carl H Lunde for reporting this issue.

Mitigation

The UDF filesystem is enabled via loading the UDF kernel module. The kernel module can be prevented from loading via blacklisting see https://access.redhat.com/solutions/41278 for more information.

Last Modified