Bug 637675 (CVE-2010-3432) - CVE-2010-3432 kernel: sctp: do not reset the packet during sctp_packet_config
Summary: CVE-2010-3432 kernel: sctp: do not reset the packet during sctp_packet_config
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2010-3432
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:
: 675997 (view as bug list)
Depends On: 637680 637681 637682 637863 637864 637865 637866 637867
Blocks:
TreeView+ depends on / blocked
 
Reported: 2010-09-27 05:36 UTC by Eugene Teo (Security Response)
Modified: 2021-10-19 09:14 UTC (History)
16 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2021-10-19 09:14:30 UTC
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2010:0842 0 normal SHIPPED_LIVE Important: kernel security and bug fix update 2010-11-22 19:34:20 UTC
Red Hat Product Errata RHSA-2010:0936 0 normal SHIPPED_LIVE Important: kernel security and bug fix update 2010-12-06 14:19:04 UTC
Red Hat Product Errata RHSA-2010:0958 0 normal SHIPPED_LIVE Important: kernel-rt security and bug fix update 2010-12-08 19:08:55 UTC
Red Hat Product Errata RHSA-2011:0004 0 normal SHIPPED_LIVE Important: kernel security, bug fix, and enhancement update 2011-01-04 16:52:05 UTC

Description Eugene Teo (Security Response) 2010-09-27 05:36:25 UTC 
Description of problem:
sctp_packet_config() is called when getting the packet ready for appending of chunks.  The function should not touch the current state, since it's possible to ping-pong between two transports when sending, and that can result packet corruption followed by skb overlfow crash.

Upstream commit:
http://git.kernel.org/linus/4bdab43323b459900578b200a4b8cf9713ac8fab

Reference:
http://marc.info/?l=linux-netdev&m=128453869227715&w=3
http://www.spinics.net/lists/linux-sctp/msg01051.html

Essentially, we are resetting the contents of the packet when it's not empty.
Comment 6 Eugene Teo (Security Response) 2010-09-29 09:09:54 UTC 
Mitigation:

For users that do not run applications that use SCTP, you can prevent the sctp module from being loaded by adding the following entry to the end of the /etc/modprobe.d/blacklist file:

blacklist sctp

This way, the sctp module cannot be loaded accidentally, which may occur if an application that requires SCTP is started. A reboot is not necessary for this change to take effect.
Comment 7 Eugene Teo (Security Response) 2010-09-29 09:12:58 UTC 
Statement:

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. This was addressed in Red Hat Enterprise Linux 6 and Red Hat Enterprise MRG via https://rhn.redhat.com/errata/RHSA-2010-0958.html and https://rhn.redhat.com/errata/RHSA-2010-0842.html. Future updates in Red Hat Enterprise Linux 4 and 5 may address this flaw.
Comment 8 Chuck Ebbert 2010-09-30 21:44:39 UTC 
Fixed in 2.6.32.23 and 2.6.35.6
Comment 13 errata-xmlrpc 2010-11-10 19:08:27 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 14 errata-xmlrpc 2010-11-22 19:34:54 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 15 errata-xmlrpc 2010-12-01 22:24:26 UTC 
This issue has been addressed in following products:

  Red Hat Enterprise Linux 4

Via RHSA-2010:0936 https://rhn.redhat.com/errata/RHSA-2010-0936.html
Comment 16 errata-xmlrpc 2010-12-08 19:09:01 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
Comment 21 errata-xmlrpc 2011-01-04 16:52:15 UTC 
This issue has been addressed in following products:

  Red Hat Enterprise Linux 5

Via RHSA-2011:0004 https://rhn.redhat.com/errata/RHSA-2011-0004.html
Comment 22 Flavio Leitner 2011-07-11 19:26:33 UTC 
*** Bug 675997 has been marked as a duplicate of this bug. ***
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