Home/CVE/An oracle protection mechanism in the get_client_master_key function in s2_srvr.c in the SSLv2 implementation in OpenSSL
CVE

CVE-2016-0704

An oracle protection mechanism in the get_client_master_key function in s2_srvr.c in the SSLv2 implementation in OpenSSL

An oracle protection mechanism in 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 overwrites incorrect MASTER-KEY bytes during use of export cipher suites, which makes it easier for remote attackers to decrypt TLS ciphertext data by leveraging a Bleichenbacher RSA padding oracle, a related issue to CVE-2016-0800.

MEDIUM · CVSS 5.9 EPSS 0.05992
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  • EPSS percentile: top 9% of all CVEs by exploitation likelihood
Sigma rules0 YARA rules0

Affected Products & Versions

2
openssl<= 0.9.8ze
opensslall versions

Scoring & Timeline

5.9
MEDIUM · CVSS v3.0 · secalert@redhat.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD02 Mar 2016 · 11:59 AM
CVSS VectorCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Vendor Advisories

20
siemens-csafSSA-412672
suse-csafSUSE-SU-2016:1057-1
suse-csafSUSE-SU-2016:0786-1
suse-csafSUSE-SU-2016:0778-1
suse-csafSUSE-SU-2016:0748-1
🔗

References & Sources

29
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
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