What is the CVSS score of CVE-2021-21343?

CVE-2021-21343 has a CVSS 3.1 base score of 7.5 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N. EPSS exploitation probability: 46.7%.

Is there a public PoC exploit available for CVE-2021-21343?

Yes, a public proof-of-concept exploit is available for CVE-2021-21343. Prioritise patching immediately. EPSS: 46.7%.

Is there a patch available for CVE-2021-21343?

Yes, a patch is available for CVE-2021-21343. Update the affected software to the latest version immediately.

Java CVE-2021-21343

HIGH

External Control of File Name or Path (CWE-73)

2021-03-23 security-advisories@github.com

Code Injection Java Oncommand Insight Activemq Jmeter Xstream Debian Linux Fedora Banking Enterprise Default Management Banking Platform Banking Virtual Account Management Business Activity Monitoring Communications Billing And Revenue Management Elastic Charging Engine Communications Policy Management Communications Unified Inventory Management Retail Xstore Point Of Service Webcenter Portal

7.5

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

7.5 HIGH

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

None

Lifecycle Timeline

CVE Published

Mar 23, 2021 - 00:15 nvd

HIGH 7.5

Blast Radius

ecosystem impact

† from your stack dependencies † transitive graph · vuln.today resolves 4-path depth

1,343 maven packages depend on com.thoughtworks.xstream:xstream (145 direct, 1,200 indirect)

Ecosystem-wide dependent count for version 1.4.16.

DescriptionNVD

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.

AnalysisAI

XStream is a Java library to serialize objects to XML and back again. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.

Technical ContextAI

This vulnerability is classified under CWE-73. 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. Affected products include: Netapp Oncommand Insight, Apache Activemq, Apache Jmeter, Xstream, Debian Debian Linux. Version information: version 1.4.16.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.