Deserialization in Apache Activemq
CVE-2021-21343
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 the deletion of a file on the local host. 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.
EPSS: 0.467 (98.7th percentile) — read the EPSS interpretation.
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.
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_billing_and_revenue_management_elastic_charging_engine — versions 12.0.0.3.0
- 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
- security-advisories@github.com (Third Party Advisory, x_refsource_MISC, Mitigation)
- security-advisories@github.com (Third Party Advisory, x_refsource_MISC, Release Notes)
- security-advisories@github.com (x_refsource_CONFIRM, Third Party Advisory)
- security-advisories@github.com (Exploit, Third Party Advisory, x_refsource_MISC)
- security-advisories@github.com (mailing-list, x_refsource_MLIST, Mailing List, Third Party Advisory)
- security-advisories@github.com (mailing-list, x_refsource_MLIST, Mailing List, Third Party Advisory, Issue Tracking)
- security-advisories@github.com (mailing-list, x_refsource_MLIST, Mailing List, Third Party Advisory, Issue Tracking)
- security-advisories@github.com (x_refsource_CONFIRM, Third Party Advisory)
- security-advisories@github.com (Third Party Advisory, x_refsource_MISC)
- security-advisories@github.com (x_refsource_FEDORA, vendor-advisory, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-21343?
- CVE-2021-21343 is a medium-severity vulnerability in Apache Activemq, classified under External Control of File Name or Path. CVSS score: 5.3/10. Published 2021-03-23.
- How severe is CVE-2021-21343?
- Medium severity. CVSS v3 base score is 5.3 out of 10.
- Is CVE-2021-21343 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.