Information disclosure in OpenSSL
CVE-2016-0800
The SSLv2 protocol, as used in OpenSSL before 1.0.1s and 1.0.2 before 1.0.2g and other products, requires a server to send a ServerVerify message before establishing that a client possesses certain plaintext RSA data, which makes it easier for remote attackers to decrypt TLS ciphertext data by leveraging a Bleichenbacher RSA padding oracle, aka a "DROWN" attack.
Vulnerability class: Information Disclosure
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.821 (99.7th percentile), scored .
High probability of exploitation in the next 30 days — patch promptly. 100th percentile — 99.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.784 · newest: 0.821 · change: +0.037
Affected products
- OpenSSL — versions 1.0.1, 1.0.1a, 1.0.1b
- Pulsesecure Client
- Pulsesecure Steel Belted Radius
Weakness classification (CWE)
Public proof-of-concept exploits
References
- kc.mcafee.com/corporate/index
- www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html
- access.redhat.com/security/vulnerabilities/drown
- marc.info/ (vendor-advisory)
- h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay
- www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html
- h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay
- marc.info/ (vendor-advisory)
- h20566.www2.hpe.com/hpsc/doc/public/display
- h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay
Frequently asked questions
- What is CVE-2016-0800?
- CVE-2016-0800 is a medium-severity vulnerability in OpenSSL, classified under Information Disclosure. CVSS score: 5.9/10. Published 2016-03-01.
- How severe is CVE-2016-0800?
- Medium severity. CVSS v3 base score is 5.9 out of 10.
- Is CVE-2016-0800 known to be exploited?
- 67 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.