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CVE search · CVE-2018-0732

CVE-2018-0732

high 7.5

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).

Open in the NVD CVE.org JSON

Details

Status
Modified
Published
Last changed
Source
openssl-security@openssl.org
Weakness
CWE-320

Severity

VersionScoreVectorSource
CVSS 3.1 high 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H nvd@nist.govPrimary
CVSS 2.0 medium 5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P nvd@nist.govPrimary

Affected products

Vendor and product from the NVD’s CPE applicability statements. Versions and conditions are on the NVD’s page.

References