Medium severity · published Mar 2, 2016
CVE-2016-0703
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…
5.9
CVSS
5.4%
EPSS
No
On KEV
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 vector
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)5.4% · higher than 93% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
OP
Openssl · Openssl
through 0.9.8ze; 1.0.0; 1.0.0; 1.0.0; 1.0.0; 1.0.0; +34 more · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2016-0703
CVE.org
https://www.cve.org/CVERecord?id=CVE-2016-0703
kb.juniper.net
http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10759
lists.opensuse.org
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00001.html
lists.opensuse.org
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00002.html
lists.opensuse.org
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00003.html
lists.opensuse.org
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00004.html
lists.opensuse.org
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00006.html
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