critical
9.8
CWE
119 787 121
Advisory Published
Updated

CVE-2020-27221: Buffer Overflow

First published: Thu Jan 21 2021(Updated: )

Eclipse OpenJ9 is vulnerable to a stack-based buffer overflow when the virtual machine or JNI natives are converting from UTF-8 characters to platform encoding. By sending an overly long string, a remote attacker could overflow a buffer and execute arbitrary code on the system or cause the application to crash.

Credit: emo@eclipse.org

Affected SoftwareAffected VersionHow to fix
redhat/java<1.8.0-ibm-1:1.8.0.6.25-1jpp.1.el7
1.8.0-ibm-1:1.8.0.6.25-1jpp.1.el7
redhat/java<1.7.1-ibm-1:1.7.1.4.80-1jpp.1.el7
1.7.1-ibm-1:1.7.1.4.80-1jpp.1.el7
redhat/java<1.8.0-ibm-1:1.8.0.6.25-2.el8_3
1.8.0-ibm-1:1.8.0.6.25-2.el8_3
Eclipse Openj9<=0.23.0
IBM Cloud Pak for Automation<=20.0.3-IF002
IBM Cloud Pak for Automation<=21.0.1

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is CVE-2020-27221?

    CVE-2020-27221 is a vulnerability in Eclipse OpenJ9 that allows a remote attacker to execute arbitrary code or cause application crashes by sending an overly long string.

  • How severe is CVE-2020-27221?

    CVE-2020-27221 has a severity rating of critical, with a severity value of 9 out of 10.

  • How does CVE-2020-27221 affect Eclipse OpenJ9?

    CVE-2020-27221 affects Eclipse OpenJ9 up to and including version 0.23.

  • How can CVE-2020-27221 be exploited?

    CVE-2020-27221 can be exploited by sending an overly long string to the virtual machine or JNI natives when converting from UTF-8 characters to platform encoding.

  • What is the remedy for CVE-2020-27221?

    The remedy for CVE-2020-27221 is to update to the following versions: 1.8.0-ibm-1:1.8.0.6.25-1jpp.1.el7, 1.7.1-ibm-1:1.7.1.4.80-1jpp.1.el7, or 1.8.0-ibm-1:1.8.0.6.25-2.el8_3, depending on the affected software.

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