CVE-2017-3730
7.5
HIGH
CVSS 3.1
EPSS 59.2%
Description
In OpenSSL 1.1.0 before 1.1.0d, if a malicious server supplies bad parameters for a DHE or ECDHE key exchange then this can result in the client attempting to dereference a NULL pointer leading to a client crash. This could be exploited in a Denial of Service attack.
How to fix CVE-2017-3730
To remediate CVE-2017-3730, upgrade the affected package to a fixed version below.
- Debian/openssl—upgrade to 1.1.0d-1 or later
Is CVE-2017-3730 being exploited?
Likely — EPSS is 59.2%, placing CVE-2017-3730 in the top tier of vulnerabilities by exploitation probability. Prioritise patching.
Affected packages (1)
- from 0, < 1.1.0d-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 |