Bug 748961 - (CVE-2011-4073) CVE-2011-4073 openswan: use-after-free vulnerability leads to DoS
CVE-2011-4073 openswan: use-after-free vulnerability leads to DoS
Status: CLOSED ERRATA
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
medium Severity medium
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Assigned To: Red Hat Product Security
impact=moderate,public=20111028,repor...
: Security
Depends On: 748967 748968 748969 748970
Blocks: 748965
  Show dependency treegraph
 
Reported: 2011-10-25 13:41 EDT by Vincent Danen
Modified: 2016-11-08 10:53 EST (History)
4 users (show)

See Also:
Fixed In Version: openswan 2.6.37
Doc Type: Bug Fix
Doc Text:
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Environment:
Last Closed: 2011-11-02 18:08:43 EDT
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RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---


Attachments (Terms of Use)
proposed upstream patch (6.90 KB, patch)
2011-10-25 16:17 EDT, Vincent Danen
no flags Details | Diff
openswan patch for cve-2011-4073 for 6.2, 6.1.z and 5.8 (6.97 KB, patch)
2011-10-25 18:09 EDT, Avesh Agarwal
no flags Details | Diff

  None (edit)
Description Vincent Danen 2011-10-25 13:41:50 EDT
A use-after-free flaw was reported in the cryptography support in Openswan Phase 2 negotiation.  This could be used by a remote authenticated attacker to crash Openswan.
Comment 3 Vincent Danen 2011-10-25 16:17:40 EDT
Created attachment 530171 [details]
proposed upstream patch
Comment 5 Vincent Danen 2011-10-25 16:51:33 EDT
Acknowledgements:

Red Hat would like to thank the Openswan project for reporting this issue. Upstream acknowledges Petar Tsankov, Mohammad Torabi Dashti and David Basin of the information security group at ETH Zurich as the original reporters.
Comment 11 Vincent Danen 2011-10-27 11:59:58 EDT
External References:

http://openswan.org/download/CVE-2011-4073/CVE-2011-4073.txt
Comment 12 Vincent Danen 2011-10-28 17:55:31 EDT
The upstream patch to correct this flaw:

http://www.openswan.org/download/CVE-2011-4073/openswan-2.x.x-CVE-2011-4073.patch
Comment 13 errata-xmlrpc 2011-11-02 18:03:45 EDT
This issue has been addressed in following products:

  Red Hat Enterprise Linux 6
  Red Hat Enterprise Linux 5

Via RHSA-2011:1422 https://rhn.redhat.com/errata/RHSA-2011-1422.html
Comment 14 Vincent Danen 2011-11-02 18:10:16 EDT
Fedora updates that fix this flaw:

openswan-2.6.33-3.fc14
openswan-2.6.37-1.fc15
openswan-2.6.37-1.fc16
Comment 15 Fedora Update System 2011-12-10 14:48:33 EST
openswan-2.6.37-1.fc16 has been pushed to the Fedora 16 stable repository.  If problems still persist, please make note of it in this bug report.
Comment 16 Fedora Update System 2011-12-10 14:50:40 EST
openswan-2.6.33-3.fc14 has been pushed to the Fedora 14 stable repository.  If problems still persist, please make note of it in this bug report.
Comment 17 Fedora Update System 2011-12-10 14:56:42 EST
openswan-2.6.37-1.fc15 has been pushed to the Fedora 15 stable repository.  If problems still persist, please make note of it in this bug report.

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