CVE-2018-0732
low
CVSS v3
—
CVSS v2
—
VIR risk
2.5
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).
Predictions
Exploit likelihood
20%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2018-0732
Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2018-0732.html
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| arch | fixed | 1:1.1.0.i-1 | |
| sles | affected | | |
| debian | bookworm | fixed | 1.1.1-1 |
| debian | bullseye | fixed | 1.1.1-1 |
| debian | forky | fixed | 1.1.1-1 |
| debian | sid | fixed | 1.1.1-1 |
| debian | trixie | fixed | 1.1.1-1 |
References
Verify integrity in audit chain (admin only). AS-IS.