SB2014051207 - Permissions, Privileges, and Access Controls in Linux kernel
Published: May 12, 2014 Updated: August 10, 2020
Security Bulletin ID
SB2014051207
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2014-1738)
The vulnerability allows a remote non-authenticated attacker to gain access to sensitive information.
The raw_cmd_copyout function in drivers/block/floppy.c in the Linux kernel through 3.14.3 does not properly restrict access to certain pointers during processing of an FDRAWCMD ioctl call, which allows local users to obtain sensitive information from kernel heap memory by leveraging write access to a /dev/fd device.
Remediation
Install update from vendor's website.
References
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=2145e15e0557a01b9195d1c7199a1b92cb9be81f
- http://linux.oracle.com/errata/ELSA-2014-0771.html
- http://linux.oracle.com/errata/ELSA-2014-3043.html
- http://lists.opensuse.org/opensuse-security-announce/2014-05/msg00007.html
- http://lists.opensuse.org/opensuse-security-announce/2014-05/msg00012.html
- http://rhn.redhat.com/errata/RHSA-2014-0800.html
- http://rhn.redhat.com/errata/RHSA-2014-0801.html
- http://secunia.com/advisories/59262
- http://secunia.com/advisories/59309
- http://secunia.com/advisories/59406
- http://secunia.com/advisories/59599
- http://www.debian.org/security/2014/dsa-2926
- http://www.debian.org/security/2014/dsa-2928
- http://www.openwall.com/lists/oss-security/2014/05/09/2
- http://www.securityfocus.com/bid/67302
- http://www.securitytracker.com/id/1030474
- https://bugzilla.redhat.com/show_bug.cgi?id=1094299
- https://github.com/torvalds/linux/commit/2145e15e0557a01b9195d1c7199a1b92cb9be81f