CA Application Performance Management Agent (APM / Wily / Introscope)INTROSCOPE
Issue/Introduction
Getting below vulnerability in APM servers(MOM , EM and TIM). **************************************************************************
The remote service accepts connections encrypted using SSL 2.0 and/or SSL 3.0. These versions of SSL are affected by several cryptographic flaws, including:
- An insecure padding scheme with CBC ciphers.
- Insecure session renegotiation and resumption schemes.
An attacker can exploit these flaws to conduct man-in-the-middle attacks or to decrypt communications between the affected service and clients.
Although SSL/TLS has a secure means for choosing the highest supported version of the protocol (so that these versions will be used only if the client or server support nothing better), many web browsers implement this in an unsafe way that allows an attacker to downgrade a connection (such as in POODLE). Therefore, it is recommended that these protocols be disabled entirely.
NIST has determined that SSL 3.0 is no longer acceptable for secure communications. As of the date of enforcement found in PCI DSS v3.1, any version of SSL will not meet the PCI SSC's definition of 'strong cryptography'.
Environment
APM 10.x
Resolution
We can disable SSL3.0 protocol using configuration. Please change configuration in em-jetty-config.xml and webview-jetty-config.xml file. Please add below configuration under org.eclipse.jetty.server.SslConnectionFactory. This configuration will disable the SSL3 protocol