Permissions, Privileges, and Access Controls in Linux kernel - CVE-2014-1738
Published: May 12, 2014 / Updated: August 10, 2020
Vulnerability identifier: #VU41702
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2014-1738
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 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.
How to mitigate CVE-2014-1738
Install update from vendor's website.
Sources
- 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