Bug 640036 (CVE-2010-3705) - CVE-2010-3705 kernel: sctp memory corruption in HMAC handling
Summary: CVE-2010-3705 kernel: sctp memory corruption in HMAC handling
Status: CLOSED ERRATA
Alias: CVE-2010-3705
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard: public=20101001,source=oss-security,r...
Keywords: Security
Depends On: 640459 640460 640461 640462
Blocks:
TreeView+ depends on / blocked
 
Reported: 2010-10-04 15:35 UTC by Petr Matousek
Modified: 2018-10-27 11:36 UTC (History)
18 users (show)

(edit)
Clone Of:
(edit)
Last Closed: 2012-03-28 08:46:50 UTC


Attachments (Terms of Use)


External Trackers
Tracker ID Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2010:0842 normal SHIPPED_LIVE Important: kernel security and bug fix update 2010-11-22 19:34:20 UTC
Red Hat Product Errata RHSA-2010:0958 normal SHIPPED_LIVE Important: kernel-rt security and bug fix update 2010-12-08 19:08:55 UTC

Description Petr Matousek 2010-10-04 15:35:57 UTC
Description of problem:

When parsing a peer's supported HMAC authentication options in the sctp_auth_asoc_get_hmac() function, a malicious peer can craft their HMAC array in such a way as to cause memory corruption (out-of-bounds read followed by use of retrieved out-of-bounds data), which at the very least could cause a denial of service via kernel panic, and possibly worse.  It appears this could be  triggered remotely when connecting to a malicious peer, or locally by a user acting as both endpoints.  In both cases, the "auth_enable" sysctl must be set in order to trigger the bug.

References:
http://marc.info/?l=oss-security&m=128619854321910&w=1
http://marc.info/?l=linux-kernel&m=128596992418814&w=2

Comment 2 Petr Matousek 2010-10-05 17:28:19 UTC
Statement:

Red Hat is aware of this issue and is tracking it via the following bug:
https://bugzilla.redhat.com/CVE-2010-3705.

This issue did not affect the version of Linux kernel as shipped with Red Hat Enterprise Linux 3 as it did not include support for SCTP. It did not affect Red Hat Enterprise Linux 4 and 5 as it did not include upstream commit 1f485649 that introduced the problem. Future kernel updates in Red Hat Enterprise MRG may address this flaw.

Comment 5 Eugene Teo (Security Response) 2010-11-08 06:45:44 UTC
Acknowledgements:

Red Hat would like to thank Dan Rosenberg for reporting this issue.

Comment 6 errata-xmlrpc 2010-11-10 19:09:10 UTC
This issue has been addressed in following products:

  Red Hat Enterprise Linux 6

Via RHSA-2010:0842 https://rhn.redhat.com/errata/RHSA-2010-0842.html

Comment 7 errata-xmlrpc 2010-11-22 19:35:15 UTC
This issue has been addressed in following products:

  Red Hat Enterprise Linux 6

Via RHSA-2010:0842 https://rhn.redhat.com/errata/RHSA-2010-0842.html

Comment 8 errata-xmlrpc 2010-12-08 19:09:20 UTC
This issue has been addressed in following products:

  MRG for RHEL-5

Via RHSA-2010:0958 https://rhn.redhat.com/errata/RHSA-2010-0958.html


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