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 Software | Affected Version | How 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 |
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Reference Links
- https://exchange.xforce.ibmcloud.com/vulnerabilities/195353
- https://www.ibm.com/support/pages/node/6414721 (Advisory)
- https://bugs.eclipse.org/bugs/show_bug.cgi?id=569763
- https://www.ibm.com/support/pages/java-sdk-security-vulnerabilities#IBM_Security_Update_February_2021
- https://access.redhat.com/errata/RHSA-2021:0717
- https://access.redhat.com/errata/RHSA-2021:0733
- https://access.redhat.com/errata/RHSA-2021:0736
- https://access.redhat.com/security/cve/cve-2020-27221
- https://bugzilla.redhat.com/show_bug.cgi?id=1928555
- https://www.cve.org/CVERecord?id=CVE-2020-27221 https://nvd.nist.gov/vuln/detail/CVE-2020-27221
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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