high
8.2
CWE
611
Advisory Published
Updated

CVE-2021-20492: XEE

First published: Wed May 26 2021(Updated: )

IBM WebSphere Application Server 8.0, 8.5, 9.0, and Liberty Java Batch is vulnerable to an XML External Entity Injection (XXE) attack when processing XML data. A remote attacker could exploit this vulnerability to expose sensitive information or consume memory resources. IBM X-Force ID: 197793.

Credit: psirt@us.ibm.com

Affected SoftwareAffected VersionHow to fix
IBM Cloud Pak for Automation<=20.0.3-IF002
IBM Cloud Pak for Automation<=21.0.1
Ibm Websphere Application Server>=8.0.0.0<=8.0.0.15
Ibm Websphere Application Server>=8.5.0.0<=8.5.5.19
Ibm Websphere Application Server>=9.0.0.0<=9.0.5.7
Ibm Websphere Application Server>=17.0.0.3<=21.0.0.5

Remedy

https://www.ibm.com/support/pages/node/6456017

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is CVE-2021-20492?

    CVE-2021-20492 is a vulnerability in IBM WebSphere Application Server and Liberty Java Batch that allows for an XML External Entity (XXE) injection attack, potentially exposing sensitive information or consuming memory resources.

  • Who is affected by CVE-2021-20492?

    Users of IBM WebSphere Application Server versions 8.0, 8.5, 9.0, and Liberty Java Batch versions 17.0.0.3 to 21.0.0.5 are affected by CVE-2021-20492.

  • What is the severity of CVE-2021-20492?

    CVE-2021-20492 has a severity rating of 8.2 (high).

  • How can an attacker exploit CVE-2021-20492?

    An attacker can exploit CVE-2021-20492 by injecting malicious XML data to perform an XML External Entity (XXE) attack, potentially exposing sensitive information or consuming memory resources.

  • Is there a fix for CVE-2021-20492?

    IBM has released security updates to address CVE-2021-20492. It is recommended to update to the latest version of IBM WebSphere Application Server or Liberty Java Batch to mitigate this vulnerability.

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