CVE-2017-3733
moderate-risk
Published 2017-05-04
During a renegotiation handshake if the Encrypt-Then-Mac extension is negotiated where it was not in the original handshake (or vice-versa) then this can cause OpenSSL 1.1.0 before 1.1.0e to crash (dependent on ciphersuite). Both clients and servers are affected.
Do I need to act?
~
3.1% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.5/10
High
NETWORK
/ LOW complexity
References (16)
Third Party Advisory
http://www.securityfocus.com/bid/96269
Third Party Advisory
https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na...
Vendor Advisory
https://www.openssl.org/news/secadv/20170216.txt
Third Party Advisory
http://www.securityfocus.com/bid/96269
Third Party Advisory
https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na...
Vendor Advisory
https://www.openssl.org/news/secadv/20170216.txt
46
/ 100
moderate-risk
Severity
26/34 · High
Exploitability
6/34 · Minimal
Exposure
14/34 · Moderate