Bug 1202406 (CVE-2015-1787) - CVE-2015-1787 openssl: segmentation fault in client authentication with empty CKE and DHE
Summary: CVE-2015-1787 openssl: segmentation fault in client authentication with empty...
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2015-1787
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=20150319,repor...
Depends On:
Blocks: 1202442
TreeView+ depends on / blocked
 
Reported: 2015-03-16 14:43 UTC by Martin Prpič
Modified: 2019-06-08 20:29 UTC (History)
2 users (show)

Fixed In Version: openssl 1.0.2a
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2015-03-18 03:38:36 UTC


Attachments (Terms of Use)

Description Martin Prpič 2015-03-16 14:43:41 UTC
If client authentication is used, then a server can crash with a segmentation fault in the event of a DHE ciphersuite being selected and a zero length ClientKeyExchange (CKE) message being sent by the client. This could be exploited in a denial of service attack.

This issue affects OpenSSL version 1.0.2, and is fixed in version 1.0.2a.

Acknowledgements:

Red Hat would like to thank the OpenSSL project for reporting this issue. Upstream acknowledges Matt Caswell of the OpenSSL development team as the original reporter.

Comment 1 Huzaifa S. Sidhpurwala 2015-03-18 03:37:22 UTC
Statement:

This issue did not affect the versions of openssl as shipped with Red Hat Enterprise Linux 5, 6, and 7.


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