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...
Alias: CVE-2015-1787
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
Depends On:
Blocks: 1202442
TreeView+ depends on / blocked
Reported: 2015-03-16 14:43 UTC by Martin Prpič
Modified: 2021-09-13 19:48 UTC (History)
4 users (show)

Fixed In Version: openssl 1.0.2a
Doc Type: Bug Fix
Doc Text:
Clone Of:
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.


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

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

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