CVE-2018-0732

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).

Affected products

Alt Linux, Centos, Ibm Aix, Openssl, Red Hat, Suse, Ubuntu, Virtualbox

Openssl

≤ 1.0.2o, 1.1.0h

Fix

Available

CVSS 3.1

7.5 HIGH

EPSS

49.3% (99th percentile)

Weakness

CWE-320

NVD status

Modified

Published

2018-06-12

No exploit for CVE-2018-0732 has been indexed yet. Our index is built from live traffic and upstream syncs, so this page can only say what it knows — not that no exploit exists.