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Vulnerability record · CVE-2015-1787 · published 19 March 2015

CVE-2015-1787: Openssl improper input validation vulnerability

OOpenssl · Openssl

The ssl3_get_client_key_exchange function in s3_srvr.c in OpenSSL 1.0.2 before 1.0.2a, when client authentication and an ephemeral Diffie-Hellman ciphersuite are enabled, allows remote attackers to cause a denial of service (daemon crash) via a ClientKeyExchange message with a length of zero.

2.6 CVSS 2.0 Low EPSS 6.5% · top 6.4% CWE-20 · Improper input validation
2.6CVSS 2.0 base score
6.5%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
34References
17 Jun 2026Last modified by NVD

Description

The ssl3_get_client_key_exchange function in s3_srvr.c in OpenSSL 1.0.2 before 1.0.2a, when client authentication and an ephemeral Diffie-Hellman ciphersuite are enabled, allows remote attackers to cause a denial of service (daemon crash) via a ClientKeyExchange message with a length of zero.

AV:N/AC:H/Au:N/C:N/I:N/A:P

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://marc.info/?l=bugtraq&m=143748090628601&w=2 Mailing ListThird Party Advisory
http://marc.info/?l=bugtraq&m=144050155601375&w=2 Mailing ListThird Party Advisory
http://marc.info/?l=bugtraq&m=144050297101809&w=2 Mailing ListThird Party Advisory
http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html PatchThird Party Advisory
http://www.oracle.com/technetwork/topics/security/bulletinapr2015-2511959.html Third Party Advisory
http://www.oracle.com/technetwork/topics/security/cpujan2016-2367955.html Third Party Advisory
http://www.oracle.com/technetwork/topics/security/cpujul2015-2367936.html Third Party Advisory
http://www.oracle.com/technetwork/topics/security/cpuoct2015-2367953.html Third Party Advisory
http://www.securityfocus.com/bid/73238 Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1031929 Third Party AdvisoryVDB Entry
https://bto.bluecoat.com/security-advisory/sa92 Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1202406 Issue TrackingThird Party Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf
https://git.openssl.org/?p=openssl.git%3Ba=commit%3Bh=b19d8143212ae5fbc9cebfd51c01f802fabccd33
https://kc.mcafee.com/corporate/index?page=content&id=SB10110 Third Party Advisory
https://security.gentoo.org/glsa/201503-11 Third Party Advisory
https://www.openssl.org/news/secadv_20150319.txt Vendor Advisory
http://marc.info/?l=bugtraq&m=143748090628601&w=2 Mailing ListThird Party Advisory
http://marc.info/?l=bugtraq&m=144050155601375&w=2 Mailing ListThird Party Advisory
http://marc.info/?l=bugtraq&m=144050297101809&w=2 Mailing ListThird Party Advisory
http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html PatchThird Party Advisory
http://www.oracle.com/technetwork/topics/security/bulletinapr2015-2511959.html Third Party Advisory
http://www.oracle.com/technetwork/topics/security/cpujan2016-2367955.html Third Party Advisory
http://www.oracle.com/technetwork/topics/security/cpujul2015-2367936.html Third Party Advisory
http://www.oracle.com/technetwork/topics/security/cpuoct2015-2367953.html Third Party Advisory
http://www.securityfocus.com/bid/73238 Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1031929 Third Party AdvisoryVDB Entry
https://bto.bluecoat.com/security-advisory/sa92 Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1202406 Issue TrackingThird Party Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf
https://git.openssl.org/?p=openssl.git%3Ba=commit%3Bh=b19d8143212ae5fbc9cebfd51c01f802fabccd33
https://kc.mcafee.com/corporate/index?page=content&id=SB10110 Third Party Advisory
https://security.gentoo.org/glsa/201503-11 Third Party Advisory
https://www.openssl.org/news/secadv_20150319.txt Vendor Advisory

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Source: NIST National Vulnerability Database (record CVE-2015-1787), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.