SSRF in Apache Activemq
CVE-2021-21342
XStream is a Java library to serialize objects to XML and back again. In XStream before version 1.4.16, there is a vulnerability where the processed stream at unmarshalling time contains type information to recreate the formerly written objects. XStream creates therefore new instances based on these type information. An attacker can manipulate the processed input stream and replace or inject objects, that result in a server-side forgery request. No user is affected, who followed the recommendation to setup XStream's security framework with a whitelist limited to the minimal required types. If you rely on XStream's default blacklist of the Security Framework, you will have to use at least version 1.4.16.
Vulnerability class: Insecure Deserialization
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N.
EPSS exploit prediction
EPSS: 0.500 (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: 0.500 · newest: 0.500 · change: 0.000
Affected products
- Apache Activemq — versions 5.16.0, 5.16.1
- Apache Jmeter
- NetApp Oncommand Insight
- Oracle Banking Enterprise Default Management — versions 2.10.0, 2.12.0
- Oracle Banking Platform — versions 2.4.0, 2.7.1, 2.9.0
- Oracle Banking Virtual Account Management — versions 14.2.0, 14.3.0, 14.5.0
- Oracle Business Activity Monitoring — versions 11.1.1.9.0, 12.2.1.3.0, 12.2.1.4.0
- Oracle Communications Brm - Elastic Charging Engine — versions 12.0.0.3
- Oracle Communications Policy Management — versions 12.5.0
- Oracle Communications Unified Inventory Management — versions 7.3.2, 7.3.4, 7.3.5
Weakness classification (CWE)
Public proof-of-concept exploits
References
- x-stream.github.io/security.html (Third Party Advisory, Mitigation)
- x-stream.github.io/changes.html (Third Party Advisory, Release Notes)
- github.com/x-stream/xstream/security/advisories/GHSA-hvv8-336g-rx3m (Third Party Advisory)
- x-stream.github.io/CVE-2021-21342.html (Exploit, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2021/04/msg00002.html (mailing-list, Mailing List, Third Party Advisory)
- lists.apache.org/thread.html/r9ac71b047767205aa22e3a08cb33f3e0586de6b2fac48b425… (mailing-list, Mailing List, Third Party Advisory, Issue Tracking)
- lists.apache.org/thread.html/r8244fd0831db894d5e89911ded9c72196d395a90ae655414d… (mailing-list, Mailing List, Third Party Advisory, Issue Tracking)
- security.netapp.com/advisory/ntap-20210430-0002/ (Third Party Advisory)
- www.oracle.com//security-alerts/cpujul2021.html (Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-21342?
- CVE-2021-21342 is a medium-severity vulnerability in Apache Activemq, classified under Deserialization of Untrusted Data. CVSS score: 5.3/10. Published 2021-03-23.
- How severe is CVE-2021-21342?
- Medium severity. CVSS v3 base score is 5.3 out of 10.
- Is CVE-2021-21342 known to be exploited?
- 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.