Permissions, Privileges, and Access Controls in Linux kernel - CVE-2012-4542
Published: February 28, 2013 / Updated: August 11, 2020
Vulnerability identifier: #VU43052
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2012-4542
CWE-ID: CWE-264
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a remote non-authenticated attacker to read and manipulate data.
block/scsi_ioctl.c in the Linux kernel through 3.8 does not properly consider the SCSI device class during authorization of SCSI commands, which allows local users to bypass intended access restrictions via an SG_IO ioctl call that leverages overlapping opcodes.
How to mitigate CVE-2012-4542
Install update from vendor's website.
Sources
- http://marc.info/?l=linux-kernel&m=135903967015813&w=2
- http://marc.info/?l=linux-kernel&m=135904012416042&w=2
- http://rhn.redhat.com/errata/RHSA-2013-0496.html
- http://rhn.redhat.com/errata/RHSA-2013-0579.html
- http://rhn.redhat.com/errata/RHSA-2013-0882.html
- http://rhn.redhat.com/errata/RHSA-2013-0928.html
- https://bugzilla.redhat.com/show_bug.cgi?id=875360
- https://oss.oracle.com/git/?p=redpatch.git;a=commit;h=76a274e17114abf1a77de6b651424648ce9e10c8