Bug 1066055 (CVE-2012-6638) - CVE-2012-6638 Kernel: net: tcp: potential DoS via SYN+FIN messages
Summary: CVE-2012-6638 Kernel: net: tcp: potential DoS via SYN+FIN messages
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2012-6638
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard: impact=moderate,public=20111202,repor...
Depends On: 1066057 1066058 1097628
Blocks: 879100 1091509
TreeView+ depends on / blocked
 
Reported: 2014-02-17 15:13 UTC by Prasad J Pandit
Modified: 2019-06-08 19:55 UTC (History)
34 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2014-04-24 19:43:53 UTC


Attachments (Terms of Use)


Links
System ID Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2014:0433 normal SHIPPED_LIVE Moderate: kernel security, bug fix, and enhancement update 2014-04-24 21:36:04 UTC
Red Hat Product Errata RHSA-2014:0772 normal SHIPPED_LIVE Important: kernel security and bug fix update 2014-06-19 22:02:46 UTC

Description Prasad J Pandit 2014-02-17 15:13:23 UTC
Linux kernel built with the TCP/IP networking support(CONFIG_INET) is
vulnerable to a possible DoS attack. It could occur when accepting new TCP
connection requests with 'SYN+FIN' flags instead of only 'SYN' flag set.

A remote user/program could use this flaw to cause DoS by sending multiple
connection requests to a machine.

Upstream fix:
-------------
  -> https://git.kernel.org/linus/fdf5af0daf8019cec2396cdef8fb042d80fe71fa

Comment 1 Prasad J Pandit 2014-02-17 15:18:16 UTC
Statement:

This issue does not affect the versions of Linux kernel as shipped with Red Hat Enterprise Linux 6 and Red Hat Enterprise MRG 2.

Comment 3 errata-xmlrpc 2014-04-24 17:40:33 UTC
This issue has been addressed in following products:

  Red Hat Enterprise Linux 5

Via RHSA-2014:0433 https://rhn.redhat.com/errata/RHSA-2014-0433.html

Comment 5 errata-xmlrpc 2014-06-19 18:03:11 UTC
This issue has been addressed in following products:

  Red Hat Enterprise Linux 5.9 EUS - Server Only

Via RHSA-2014:0772 https://rhn.redhat.com/errata/RHSA-2014-0772.html


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