Vulnerability in Apache Activemq
CVE-2020-11998
A regression has been introduced in the commit preventing JMX re-bind. By passing an empty environment map to RMIConnectorServer, instead of the map that contains the authentication credentials, it leaves ActiveMQ open to the following attack: https://docs.oracle.com/javase/8/docs/technotes/guides/management/agent.html "A remote client could create a javax.management.loading.MLet MBean and use it to create new MBeans from arbitrary URLs, at least if there is no security manager. In other words, a rogue remote client could make your Java application execute arbitrary code." Mitigation: Upgrade to Apache ActiveMQ 5.15.13
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.489 (98.9th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 99th percentile — 98.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.489 · newest: 0.489 · change: 0.000
Affected products
- Apache Activemq — versions 5.15.12
- Oracle Communications Diameter Signaling Router
- Oracle Communications Element Manager
- Oracle Communications Session Report Manager
- Oracle Communications Session Route Manager
- Oracle Enterprise Repository — versions 11.1.1.7.0
- Oracle Flexcube Private Banking — versions 12.0.0, 12.1.0
- Apache Activemq — versions Apache Tomcat 5.15.12
Public proof-of-concept exploits
References
- activemq.apache.org/security-advisories.data/CVE-2020-11998-announcement.txt (Vendor Advisory)
- www.oracle.com/security-alerts/cpujan2021.html (Third Party Advisory)
- lists.apache.org/thread.html/rb2fd3bf2dce042e0ab3f3c94c4767c96bb2e7e6737624d631… (mailing-list)
- lists.apache.org/thread.html/r946488fb942fd35c6a6e0359f52504a558ed438574a8f14d3… (mailing-list)
- www.oracle.com/security-alerts/cpuApr2021.html (Patch, Third Party Advisory)
- www.oracle.com//security-alerts/cpujul2021.html (Patch, Third Party Advisory)
- www.oracle.com/security-alerts/cpuoct2021.html (Patch, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-11998?
- CVE-2020-11998 is a critical-severity vulnerability in Apache Activemq. CVSS score: 9.8/10. Published 2020-09-10.
- How severe is CVE-2020-11998?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2020-11998 known to be exploited?
- 7 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.