Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2015-0205

Severity CVSS v4.0:
Pending analysis
Type:
CWE-310 Cryptographic Issues
Publication date:
09/01/2015
Last modified:
12/04/2025

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.

Impact

Vector 2.0
AV:N/AC:L/Au:N/C:N/I:P/A:N CVSS v2.0 Severity and Metrics:

Base Score: 5.00 MEDIUM
Vector: AV:N/AC:L/Au:N/C:N/I:P/A:N

Attack Vector (AV): Network
Attack Complexity (AC): Low
Authentication (Au): None
Confidentiality (C): None
Integrity (I): Physical
Availability (A): None

Base Score 2.0
5.00
Severity 2.0
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:openssl:openssl:1.0.0a:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.0b:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.0c:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.0d:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.0e:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.0f:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.0g:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.0h:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.0i:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.0j:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.0k:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.0l:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.0m:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.0n:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.0o:*:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools