SB2016050226 - Improper access control in Linux kernel netlink
Published: May 2, 2016
Security Bulletin ID
SB2016050226
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Improper access control (CVE-ID: CVE-2012-6689)
The vulnerability allows a local user to execute arbitrary code.
The vulnerability exists due to improper access control error within the netlink_sendmsg() and netlink_add_usersock_entry() functions in net/netlink/af_netlink.c. A local user can execute arbitrary code.
Remediation
Install update from vendor's website.
References
- http://marc.info/?l=linux-netdev&m=134522422925986&w=2
- http://www.openwall.com/lists/oss-security/2015/02/22/10
- https://github.com/torvalds/linux/commit/20e1db19db5d6b9e4e83021595eab0dc8f107bef
- http://marc.info/?l=linux-netdev&m=134522422125983&w=2
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=20e1db19db5d6b9e4e83021595eab0dc8f107bef
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.5.5
- https://bugzilla.redhat.com/show_bug.cgi?id=848949
- http://www.securityfocus.com/bid/72739