Exploit:Java/Majava is a family of Generic Detections that identify malicious files that exploit vulnerabilities in the Java software development platform.
Java exploits typically target known vulnerabilities in the Java Runtime Environment; to prevent successful exploitation, please ensure you install the latest updates available for Java and/or remove any old, unnecessary installations.
To ensure you have the recommended version of Java installed on your system, please refer to the vendor's Verify Java version page.
F-Secure Anti-Virus will automatically clean the relevant files.
Suspect A False Positive?
If you suspect a file has been wrongly identified by this detection (that is, it is a False Positive), you may elect to submit a sample of the file to our Labs for further analysis via:
Majava Generic Detections identify, among other things, malicious files that exploit known vulnerabilities in the Java Runtime Environment (JRE) to gain access and control of the system.
If successfully used, exploits can provide an attacker with a wide range of possible actions, from viewing data on a restricted-user database to almost complete control of a compromised system.
The exploit files may be delivered by other malware, such as the Blackhole exploit kit.
For more information, please see:
- Labs Weblog: Java & IE Patches + Prompts
- Labs Weblog: Java Considered Harmful
- Threat Report H1 2012 (PDF)