Bug 144820 - Kernel: Linux Kernel SCTP Privilege Elevation Vulnerability (CVE-2006-3745)
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McAfee, Inc.
McAfee
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McAfee, Inc.
McAfee® Avert® Labs Security Advisory
Public Release Date: 2006-08-22
Linux Kernel SCTP Privilege Elevation Vulnerability
CVE-2006-3745
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? Synopsis
The Linux kernel is susceptible to a locally exploitable flaw which may allow
local users to gain root privileges and execute arbitrary code at kernel
privilege level.
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? Vulnerable System or Application
Linux Kernel Versions: 2.4.23--2.4.32, 2.6 up to and including 2.6.17.7
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? Vulnerability Information
A locally exploitable flaw has been found in the Linux sctp module
sctp_make_abort_user function that allows local users to gain root privileges
and also execute arbitrary code at kernel privilege level.
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? Resolution
The Linux Kernel Archives has released a fix for this vulnerability. Complete
instructions for automatically updating kernel modules can be downloaded at the
following site:
http://www.kernel.org/git/?p=linux/kernel/git/stable/linux-2.6.17.y.git;
a=commit;h=96ec9da385cf72c5f775e5f163420ea92e66ded2
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? Credits
This vulnerability was discovered by Wei Wang of McAfee Avert Labs.
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? Legal Notice
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hardened-sources: Please stablize 2.6.17-r1 or higher.
xen-Sources: Bump to 2.6.17 or patch.
vserver-sources: Bump to 2.6.17 or patch.
rsbac-sources: Bump to 2.6.17 or patch.
suspend2-sources: Please stablize 2.6.17-r1 or higher.
systrace-sources: Bump to 2.6.17 or patch.
i have removed all vserver-sources < 2.6.17
FYI xen-sources will be bumped to 2.6.18 in the very near future to address
this and other security issues. Hopefully, we can also use genpatches to make
things easier in the future.
All done except xen and systrace
systrace-sources and xen-sources will be put into package.mask as of the
12/19/2006. Please bump to ~arch, or contact me to pospone the hardmasking.
xen-sources-2.6.16.28 has been in the tree since 10 Sep 2006 and is not
vulnerable (as per http://lwn.net/Articles/197177/).
I'll remove 2.6.16.26 when cvs.g.o is available again.
All vulnerable version of xen-sources (<2.6.16.28) have been removed.
package.mask on the 27th.
systrace-sources is now in package.mask
