Vulnerability in OpenSSL
CVE-2015-0205
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.
Vulnerability class: POODLE (CVE-2014-3566)
Published · last modified .
CVSS v2 metric
CVSS v2 base score 5.0 (Medium). Vector: AV:N/AC:L/Au:N/C:N/I:P/A:N. This CVE predates CVSS v3 and has no v3 score from NVD.
EPSS exploit prediction
EPSS: 0.223 (97.6th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 98th percentile — 97.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.223 · newest: 0.223 · change: 0.000
Affected products
- OpenSSL — versions 1.0.0a, 1.0.0b, 1.0.0c
Weakness classification (CWE)
Public proof-of-concept exploits
References
- exchange.xforce.ibmcloud.com/vulnerabilities/99708 (vdb-entry)
- www.oracle.com/technetwork/topics/security/cpujul2015-2367936.html
- lists.opensuse.org/opensuse-security-announce/2015-01/msg00021.html (vendor-advisory)
- tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20150310… (vendor-advisory)
- github.com/openssl/openssl/commit/1421e0c584ae9120ca1b88098f13d6d2e90b83a3
- marc.info/ (vendor-advisory)
- www.oracle.com/technetwork/security-advisory/cpujul2016-2881720.html
- www.securityfocus.com/bid/71941 (vdb-entry)
- www.oracle.com/technetwork/topics/security/cpuoct2015-2367953.html
- marc.info/ (vendor-advisory)
Frequently asked questions
- What is CVE-2015-0205?
- CVE-2015-0205 is a vulnerability in OpenSSL, classified under Cryptographic Issues. Published 2015-01-09.
- Is CVE-2015-0205 known to be exploited?
- 6 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.