Vulnerability Description
Apache Karaf allows monitoring of applications and the Java runtime by using the Java Management Extensions (JMX). JMX is a Java RMI based technology that relies on Java serialized objects for client server communication. Whereas the default JMX implementation is hardened against unauthenticated deserialization attacks, the implementation used by Apache Karaf is not protected against this kind of attack. The impact of Java deserialization vulnerabilities strongly depends on the classes that are available within the targets class path. Generally speaking, deserialization of untrusted data does always represent a high security risk and should be prevented. The risk is low as, by default, Karaf uses a limited set of classes in the JMX server class path. It depends of system scoped classes (e.g. jar in the lib folder).
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Apache | Karaf | < 4.3.6 |
Related Weaknesses (CWE)
References
- https://karaf.apache.org/security/cve-2021-41766.txtVendor Advisory
- https://karaf.apache.org/security/cve-2021-41766.txtVendor Advisory
FAQ
What is CVE-2021-41766?
CVE-2021-41766 is a vulnerability with a CVSS score of 8.1 (HIGH). Apache Karaf allows monitoring of applications and the Java runtime by using the Java Management Extensions (JMX). JMX is a Java RMI based technology that relies on Java serialized objects for client ...
How severe is CVE-2021-41766?
CVE-2021-41766 has been rated HIGH with a CVSS base score of 8.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-41766?
Check the references section above for vendor advisories and patch information. Affected products include: Apache Karaf.