CVE-2016-0703: openssl
Vulnerability summary
CVE-2016-0703 is a medium (CVSS 5.9) vulnerability in openssl. EPSS estimates a 5.40% chance of exploitation in the next 30 days, higher than 92.5% of scored vulnerabilities.
Advisory lineage
Upstream 0 · Downstream 15 · Related 7Timeline
- 02-03-2016PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
Description
The get_client_master_key function in s2_srvr.c in the SSLv2 implementation in OpenSSL before 0.9.8zf, 1.0.0 before 1.0.0r, 1.0.1 before 1.0.1m, and 1.0.2 before 1.0.2a accepts a nonzero CLIENT-MASTER-KEY CLEAR-KEY-LENGTH value for an arbitrary cipher, which allows man-in-the-middle attackers to determine the MASTER-KEY value and decrypt TLS ciphertext data by leveraging a Bleichenbacher RSA padding oracle, a related issue to CVE-2016-0800.
CVSS metrics
3 scores · 2 sources · 2 versions- OSV · DebianEcosystem advisory · calculated5.9MediumCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
EPSS trend
Probability
5.40%
Chance of exploitation in the next 30 days
Percentile
93%
Versus all other CVEs
30-day change
0.00 pp
From 5.40% on 19-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Debian1 product
- openssl< 1.0.0c-2
Openssl1 product
- opensslEOL≤ 0.9.8ze | 1.0.0 | 1.0.0:beta1 | 1.0.0:beta2 | 1.0.0:beta3 | 1.0.0:beta4 | 1.0.0:beta5 | 1.0.0a | 1.0.0b | 1.0.0c | 1.0.0d | 1.0.0e | 1.0.0f | 1.0.0g | 1.0.0h | 1.0.0i | 1.0.0j | 1.0.0k | 1.0.0l | 1.0.0m | 1.0.0n | 1.0.0o | 1.0.0p | 1.0.0q | 1.0.1 | 1.0.1:beta1 | 1.0.1:beta2 | 1.0.1:beta3 | 1.0.1a | 1.0.1b | 1.0.1c | 1.0.1d | 1.0.1e | 1.0.1f | 1.0.1g | 1.0.1h | 1.0.1i | 1.0.1j | 1.0.1k | 1.0.1l | 1.0.2 | 1.0.2:beta1 | 1.0.2:beta2 | 1.0.2:beta3
2 vendors · 2 products
References
32 links- www.securityfocus.com/bid/83743VDB Entry
- security.freebsd.org/advisories/FreeBSD-SA-16:12.openssl.ascVendor Advisory
Show all 32 references
- openssl.org/news/secadv/20160301.txtVendor Advisory
- security.gentoo.org/glsa/201603-15Vendor Advisory
- www.securitytracker.com/id/1035133VDB Entry