CVE-2018-0732
openssl1.0 - security update
7.5
HIGH
CVSS 3.1
EPSS 49.3%
Description
During key agreement in a TLS handshake using a DH(E) based ciphersuite a malicious server can send a very large prime value to the client. This will cause the client to spend an unreasonably long period of time generating a key for this prime resulting in a hang until the client has finished. This could be exploited in a Denial Of Service attack. Fixed in OpenSSL 1.1.0i-dev (Affected 1.1.0-1.1.0h). Fixed in OpenSSL 1.0.2p-dev (Affected 1.0.2-1.0.2o).
How to fix CVE-2018-0732
To remediate CVE-2018-0732, upgrade the affected package to a fixed version below.
- —upgrade to 2.7.4-r0 or later
- —upgrade to 1.0.2o-r1 or later
Is CVE-2018-0732 being exploited?
Moderate — EPSS is 49.3%. Track this CVE but it's not at the top of the prioritisation list.
Affected packages (2)
- from 0, < 2.7.4-r0
- >= 1.0.2, < 1.0.2o-r1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |