SSL/TLS Certificate RSA Keys Less Than 2048 bits

Low Web Application Scanning Plugin ID 112540

Synopsis

SSL/TLS Certificate RSA Keys Less Than 2048 bits

Description

The remote server certificate has a key that is shorter than 2048 bits. According to industry standards set by the Certification Authority/Browser (CA/B) Forum, certificates issued after January 1, 2014 must be at least 2048 bits.
Some browser SSL implementations may reject keys less than 2048 bits after January 1, 2014. Additionally, some SSL certificate vendors may revoke certificates less than 2048 bits before January 1, 2014.

Solution

Replace the certificate with the RSA key less than 2048 bits in length with a longer key, and reissue any certificates signed by the old certificate.

Plugin Details

Severity: Low

ID: 112540

Type: remote

Family: SSL/TLS

Published: 2019/02/01

Updated: 2019/02/01

Risk Information

Risk Factor: Low

CVSS v2.0

Base Score: 3.2

Vector: CVSS2#AV:A/AC:H/Au:N/C:P/I:P/A:N

CVSS v3.0

Base Score: 4.2

Vector: CVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N

Reference Information

CWE: 326

WASC: Application Misconfiguration

OWASP: 2010-A7, 2013-A6, 2017-A3