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OpenSSL DH client certificates accepted without verification [Server] (CVE-2015-0205)

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OpenSSL DH client certificates accepted without verification [Server] (CVE-2015-0205)

Severity
5
CVSS
(AV:N/AC:L/Au:N/C:N/I:P/A:N)
Published
01/09/2015
Created
07/25/2018
Added
01/09/2015
Modified
01/04/2017

Description

The ssl3_get_cert_verify function in s3_srvr.c in OpenSSL 1.0.0 before 1.0.0p and 1.0.1 before 1.0.1k accepts client authentication with a Diffie-Hellman (DH) certificate without requiring a CertificateVerify message, which allows remote attackers to obtain access without knowledge of a private key via crafted TLS Handshake Protocol traffic to a server that recognizes a Certification Authority with DH support.

Solution(s)

  • http-openssl-1_0_0-upgrade-1_0_0_p
  • http-openssl-1_0_1-upgrade-1_0_1_k

References

  • http-openssl-1_0_0-upgrade-1_0_0_p
  • http-openssl-1_0_1-upgrade-1_0_1_k

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