CVE-2017-3733
7.5
HIGH
CVSS 3.1
EPSS 3.1%
Description
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.
How to fix CVE-2017-3733
To remediate CVE-2017-3733, upgrade the affected package to a fixed version below.
- Debian/openssl—upgrade to 1.1.0e-1 or later
Is CVE-2017-3733 being exploited?
Low — EPSS is 3.1%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 1.1.0e-1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |