Skip to main content

Prevent CCS injection attacks

The server is vulnerable to CCS injections. Malicious intermediate nodes can intercept encrypted data and decrypt it by forcing SSL clients to use a weak key.

Security assessment​

Security_Assessment_PreventCSSInjection

CVSS vector: AV:N/AC:M/AU:N/C:P/I:P/A:P

Vulnerability information​

The server is vulnerable to CCS Injections. Malicious intermediate nodes can intercept encrypted data and decrypt it by forcing SSL clients to use a weak key.

Prevent attacks​

Update OpenSSL to the latest version. The following versions are known to prevent CCS injections:

  • OpenSSL 1.0.1h
  • OpenSSL 1.0.0m
  • OpenSSL 0.9.8za

E.g., run:

apt-get update; apt-get upgrade # Debian / Ubuntu  
yum update                      # RHeL / CentOS  
pacman -Syu                     # Arch Linux
Last updated on