National Cyber-Alert System
Vulnerability Summary for CVE-2012-3520
Original release date:10/03/2012
Last revised:10/03/2012
Source:
US-CERT/NIST
Overview
The Netlink implementation in the Linux kernel before 3.2.30 does not properly handle messages that lack SCM_CREDENTIALS data, which might allow local users to spoof Netlink communication via a crafted message, as demonstrated by a message to (1) Avahi or (2) NetworkManager.
Impact
CVSS Severity (version 2.0):
Impact Subscore:
2.9
Exploitability Subscore:
3.4
CVSS Version 2 Metrics:
Access Vector: Locally exploitable
Access Complexity: Medium
Authentication: Not required to exploit
Impact Type:Allows unauthorized modification
References to Advisories, Solutions, and Tools
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External Source: CONFIRM
Name: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=e0e3cea46d31d23dc40df0a49a7a2c04fe8edfea
Type: Patch Information
External Source: CONFIRM
Name: https://github.com/torvalds/linux/commit/e0e3cea46d31d23dc40df0a49a7a2c04fe8edfea
External Source: CONFIRM
Name: https://bugzilla.redhat.com/show_bug.cgi?id=850449
External Source: MLIST
Name: [oss-security] 20120822 CVE-2012-3520 kernel: af_netlink: invalid handling of SCM_CREDENTIALS passing
External Source: CONFIRM
Name: http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.2.30