Deserialization in Apache Karaf
CVE-2021-41766
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).
Vulnerability class: Insecure Deserialization
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.020 (81.1th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 81st percentile — 81.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.020 · newest: 0.020 · change: 0.000
Affected products
- Apache Karaf
- Apache Software Foundation Karaf — versions Apache Karaf
Weakness classification (CWE)
References
- karaf.apache.org/security/cve-2021-41766.txt (Vendor Advisory)
Frequently asked questions
- What is CVE-2021-41766?
- CVE-2021-41766 is a high-severity vulnerability in Apache Karaf, classified under Deserialization of Untrusted Data. CVSS score: 8.1/10. Published 2022-01-26.
- How severe is CVE-2021-41766?
- High severity. CVSS v3 base score is 8.1 out of 10.