low
1.9
CWE
287
Advisory Published
CVE Published
Updated

CVE-2012-3520

First published: Tue Aug 21 2012(Updated: )

A flaw was found in the way Netlink messages without explicitly set SCM_CREDENTIALS were delivered. The kernel passes all-zero SCM_CREDENTIALS ancillary data to the receiver if the sender did not provide such data, instead of including the correct data from the peer (as it is the case with AF_UNIX). Programs that set SO_PASSCRED option on the Netlink socket and rely on SCM_CREDENTIALS for authentication might accept spoofed messages and perform privileged actions on behalf of the unprivileged attacker. Introduced in: <a href="http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=16e57262">http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=16e57262</a> Acknowledgements: Red Hat would like to thank Pablo Neira Ayuso for reporting this issue.

Credit: secalert@redhat.com

Affected SoftwareAffected VersionHow to fix
Linux Kernel<=3.2.29
Linux Kernel=2.3.2
Linux Kernel=2.3.20
Linux Kernel=2.3.21
Linux Kernel=2.3.22
Linux Kernel=2.3.23
Linux Kernel=2.3.24
Linux Kernel=2.3.25
Linux Kernel=2.3.26
Linux Kernel=2.3.27
Linux Kernel=2.3.28
Linux Kernel=2.3.29
Linux Kernel=2.4.33.2
Linux Kernel=2.6.13.2
Linux Kernel=2.6.23.2
Linux Kernel=2.6.33.2
Linux Kernel=2.6.33.20
Linux Kernel=3.2
Linux Kernel=3.2-rc2
Linux Kernel=3.2-rc3
Linux Kernel=3.2-rc4
Linux Kernel=3.2-rc5
Linux Kernel=3.2-rc6
Linux Kernel=3.2-rc7
Linux Kernel=3.2.1
Linux Kernel=3.2.2
Linux Kernel=3.2.3
Linux Kernel=3.2.4
Linux Kernel=3.2.5
Linux Kernel=3.2.6
Linux Kernel=3.2.7
Linux Kernel=3.2.8
Linux Kernel=3.2.9
Linux Kernel=3.2.10
Linux Kernel=3.2.11
Linux Kernel=3.2.12
Linux Kernel=3.2.13
Linux Kernel=3.2.14
Linux Kernel=3.2.15
Linux Kernel=3.2.16
Linux Kernel=3.2.17
Linux Kernel=3.2.18
Linux Kernel=3.2.19
Linux Kernel=3.2.20
Linux Kernel=3.2.21
Linux Kernel=3.2.22
Linux Kernel=3.2.23
Linux Kernel=3.2.24
Linux Kernel=3.2.25
Linux Kernel=3.2.26
Linux Kernel=3.2.27
Linux Kernel=3.2.28
Linux Kernel=3.3.2
debian/linux
5.10.223-1
5.10.226-1
6.1.123-1
6.1.119-1
6.12.11-1
6.12.12-1

Remedy

https://git.kernel.org/linus/16e5726269611b71c930054ffe9b858c1cea88eb

Remedy

https://git.kernel.org/linus/e0e3cea46d31d23dc40df0a49a7a2c04fe8edfea

Remedy

https://git.kernel.org/linus/Id4f36301d407ef5c8218c5ef9f66d299766cdf57

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