CVE-2013-2237

Published: 04 July 2013

The key_notify_policy_flush function in net/key/af_key.c in the Linux kernel before 3.9 does not initialize a certain structure member, which allows local users to obtain sensitive information from kernel heap memory by reading a broadcast message from the notify_policy interface of an IPSec key_socket.

From the Ubuntu security team

An information leak was discovered in the Linux kernel when reading broadcast messages from the notify_policy interface of the IPSec key_socket. A local user could exploit this flaw to examine potentially sensitive information in kernel memory.

Status

References

• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-2237
• https://github.com/torvalds/linux/commit/85dfb745ee40232876663ae206cba35f24ab2a40
• https://www.kernel.org/pub/linux/kernel/v3.x/patch-3.9.bz2
• https://bugzilla.redhat.com/show_bug.cgi?id=981220
• http://www.openwall.com/lists/oss-security/2013/07/04/3
• http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=85dfb745ee40232876663ae206cba35f24ab2a40
• https://ubuntu.com/security/notices/USN-1912-1
• https://ubuntu.com/security/notices/USN-1913-1
• https://ubuntu.com/security/notices/USN-1970-1
• https://ubuntu.com/security/notices/USN-1972-1
• https://ubuntu.com/security/notices/USN-1973-1
• https://ubuntu.com/security/notices/USN-1992-1
• https://ubuntu.com/security/notices/USN-1993-1
• https://ubuntu.com/security/notices/USN-1995-1
• https://ubuntu.com/security/notices/USN-1998-1
• NVD
• Launchpad
• Debian

Bugs

• https://launchpad.net/bugs/1198296