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Fencer Intel
medium 5.9

CVE-2016-0703 json

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.…

published 2016-03-02 10 y ago modified 2026-06-17 4 mo ago also EUVD-2016-0738

cvss
5.9
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
5.4%
EPSS 5.4% chance of exploitation in 30 days, percentile 92%
public exploits
0
none known

Summary

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.

Patch / fix

  • openssl Debian 14, Debian 13, Debian 12 1.0.0c-2

debian advisories DEBIAN-CVE-2016-0703

  • openssl098e RHEL 6 0.9.8e-20.el6_7.1
  • openssl098e RHEL 7 0.9.8e-29.el7_2.3
  • openssl RHEL 5 0.9.8e-33.el5_11
  • openssl-perl RHEL 5 0.9.8e-33.el5_11
  • openssl storage 2.1, RHEL 6 1.0.1e-30.el6_6.7
  • openssl-perl storage 2.1, RHEL 6 1.0.1e-30.el6_6.7
  • openssl RHEL 7 1:1.0.1e-42.el7_1.4
  • openssl RHEL 7 1:1.0.1e-42.ael7b_1.4

red hat advisories RHSA-2016:0372RHSA-2016:0306RHSA-2016:0304RHSA-2016:0303RHSA-2015:0800RHSA-2015:0752

  • openssl OpenStack Cloud 5, Manager Proxy 2.1, Manager 2.1 0.9.8j-0.91.1
  • compat-openssl098 SLES for SAP 12 SP1, SLED 12 SP1, SLED 12 +1 more 0.9.8j-94.1
  • compat-openssl097g SLES for SAP 11 SP4, SLED 11 SP4 0.9.7g-146.22.41.1
  • openssl Studio Onsite 1.3, SLES for SAP 11 SP4, SLES 11 SP4 +5 more 0.9.8j-0.89.1
  • openssl SLES for SAP 12 SP1, SLES 12 SP1, SLED 12 SP1 +1 more 1.0.1i-44.1
  • openssl SLES for SAP 12, SLES 12, SLED 12 +1 more 1.0.1i-27.13.1
  • openssl1 SLES 11-SECURITY 1.0.1g-0.40.1

suse advisories SUSE-SU-2016:1057-1SUSE-SU-2016:0641-1SUSE-SU-2016:0631-1SUSE-SU-2016:0624-1SUSE-SU-2016:0620-1SUSE-SU-2016:0617-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2016-0703 updated cvss 4.3

openssl: Divide-and-conquer session key recovery in SSLv2

  • Red Hat Enterprise Linux 5 openssl097a
    affected: no fix planned “Will not fix”
  • Red Hat JBoss Enterprise Application Platform 6 openssl Red Hat JBoss Enterprise Web Server 1 openssl Red Hat JBoss Enterprise Web Server 2 openssl Red Hat JBoss Enterprise Web Server 3 openssl
    under investigation
  • Red Hat Enterprise Linux (v. 5 server) openssl 0.9.8e-33.el5_11, openssl-perl 0.9.8e-33.el5_11
    fixed: vendor fix RHSA-2015:0800
  • Red Hat Enterprise Linux AS (v. 4 ELS) openssl 0.9.7a-43.23.el4, openssl-perl 0.9.7a-43.23.el4
    fixed: vendor fix RHSA-2016:0306
  • Red Hat Enterprise Linux Client (v. 7) openssl 1.0.1e-42.el7_1.4, openssl098e 0.9.8e-29.el7_2.3, openssl-libs 1.0.1e-42.el7_1.4
    fixed: vendor fix RHSA-2016:0372
  • Red Hat Enterprise Linux Client Optional (v. 7) openssl-perl 1.0.1e-42.el7_1.4
    fixed: vendor fix RHSA-2015:0716
  • Red Hat Enterprise Linux ComputeNode (v. 7) openssl 1.0.1e-42.el7_1.4, openssl098e 0.9.8e-29.el7_2.3, openssl-libs 1.0.1e-42.el7_1.4
    fixed: vendor fix RHSA-2016:0372
  • Red Hat Enterprise Linux ComputeNode Optional (v. 7) openssl-perl 1.0.1e-42.el7_1.4
    fixed: vendor fix RHSA-2015:0716
show 17 more
  • Red Hat Enterprise Linux Desktop (v. 5 client) openssl 0.9.8e-33.el5_11, openssl-perl 0.9.8e-33.el5_11
    fixed: vendor fix RHSA-2015:0800
  • Red Hat Enterprise Linux Desktop (v. 6) openssl 1.0.1e-30.el6_6.7, openssl098e 0.9.8e-20.el6_7.1 Red Hat Enterprise Linux Desktop Optional (v. 6) openssl-perl 1.0.1e-30.el6_6.7
    fixed: vendor fix RHSA-2015:0715
  • Red Hat Enterprise Linux Desktop Workstation (v. 5 client) openssl 0.9.8e-33.el5_11
    fixed: vendor fix RHSA-2015:0800
  • Red Hat Enterprise Linux ES (v. 4 ELS) openssl 0.9.7a-43.23.el4, openssl-perl 0.9.7a-43.23.el4
    fixed: vendor fix RHSA-2016:0306
  • Red Hat Enterprise Linux HPC Node (v. 6) openssl 1.0.1e-30.el6_6.7, openssl098e 0.9.8e-20.el6_7.1 Red Hat Enterprise Linux HPC Node Optional (v. 6) openssl-perl 1.0.1e-30.el6_6.7
    fixed: vendor fix RHSA-2015:0715
  • Red Hat Enterprise Linux Long Life (v. 5.6 server) openssl 0.9.8e-12.el5_6.13, openssl-perl 0.9.8e-12.el5_6.13 Red Hat Enterprise Linux Long Life (v. 5.9 server) openssl 0.9.8e-26.el5_9.5, openssl-perl 0.9.8e-26.el5_9.5
    fixed: vendor fix RHSA-2016:0304
  • Red Hat Enterprise Linux Server (v. 6) openssl 1.0.1e-30.el6_6.7, openssl098e 0.9.8e-20.el6_7.1
    fixed: vendor fix RHSA-2015:0715
  • Red Hat Enterprise Linux Server (v. 7) openssl 1.0.1e-42.el7_1.4, openssl 1.0.1e-42.ael7b_1.4, openssl098e 0.9.8e-29.el7_2.3, openssl-libs 1.0.1e-42.el7_1.4, openssl-libs 1.0.1e-42.ael7b_1.4
    fixed: vendor fix RHSA-2016:0372
  • Red Hat Enterprise Linux Server AUS (v. 6.2) openssl 1.0.0-20.el6_2.8 Red Hat Enterprise Linux Server AUS (v. 6.4) openssl 1.0.0-27.el6_4.5 Red Hat Enterprise Linux Server AUS (v. 6.5) openssl 1.0.1e-16.el6_5.16
    fixed: vendor fix RHSA-2016:0303
  • Red Hat Enterprise Linux Server Optional (v. 6) openssl-perl 1.0.1e-30.el6_6.7
    fixed: vendor fix RHSA-2015:0715
  • Red Hat Enterprise Linux Server Optional (v. 7) openssl-perl 1.0.1e-42.el7_1.4, openssl-perl 1.0.1e-42.ael7b_1.4
    fixed: vendor fix RHSA-2015:0716
  • Red Hat Enterprise Linux Server Optional AUS (v. 6.2) openssl 1.0.0-20.el6_2.8, openssl-perl 1.0.0-20.el6_2.8 Red Hat Enterprise Linux Server Optional AUS (v. 6.4) openssl 1.0.0-27.el6_4.5, openssl-perl 1.0.0-27.el6_4.5 Red Hat Enterprise Linux Server Optional AUS (v. 6.5) openssl 1.0.1e-16.el6_5.16, openssl-perl 1.0.1e-16.el6_5.16
    fixed: vendor fix RHSA-2016:0303
  • Red Hat Enterprise Linux Workstation (v. 6) openssl 1.0.1e-30.el6_6.7, openssl098e 0.9.8e-20.el6_7.1
    fixed: vendor fix RHSA-2015:0715
  • Red Hat Enterprise Linux Workstation (v. 7) openssl 1.0.1e-42.el7_1.4, openssl098e 0.9.8e-29.el7_2.3, openssl-libs 1.0.1e-42.el7_1.4
    fixed: vendor fix RHSA-2016:0372
  • Red Hat Enterprise Linux Workstation Optional (v. 6) openssl-perl 1.0.1e-30.el6_6.7
    fixed: vendor fix RHSA-2015:0715
  • Red Hat Enterprise Linux Workstation Optional (v. 7) openssl-perl 1.0.1e-42.el7_1.4
    fixed: vendor fix RHSA-2015:0716
  • Red Hat Storage Server 2.1 openssl 1.0.1e-30.el6_6.7, openssl-perl 1.0.1e-30.el6_6.7
    fixed: vendor fix RHSA-2015:0752

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

cisa ICSA-22-349-21 updated cvss 5.9

Siemens SCALANCE X-200RNA Switch Devices

  • Siemens SCALANCE X204RNA (HSR) (6GK5204-0BA00-2MB2) <V3.2.7 Siemens SCALANCE X204RNA (PRP) (6GK5204-0BA00-2KB2) <V3.2.7 Siemens SCALANCE X204RNA EEC (HSR) (6GK5204-0BS00-2NA3) <V3.2.7 Siemens SCALANCE X204RNA EEC (PRP) (6GK5204-0BS00-3LA3) <V3.2.7 Siemens SCALANCE X204RNA EEC (PRP/HSR) (6GK5204-0BS00-3PA3) <V3.2.7
    affected: fixed in V3.2.7, mitigation support.industry.siemens.com

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

Exploit prediction

5.40% chance of exploitation in the next 30 days, higher than 92% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.0 5.9 CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:P/I:N/A:N

Classification

Weakness
  • CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
Technology feeds

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.