CVE-2022-42920

Apache Commons BCEL prior to 6.6.0 allows producing arbitrary bytecode via out-of-bounds writing

Description

Apache Commons BCEL has a number of APIs that would normally only allow changing specific class characteristics. However, due to an out-of-bounds writing issue, these APIs can be used to produce arbitrary bytecode. This could be abused in applications that pass attacker-controllable data to those APIs, giving the attacker more control over the resulting bytecode than otherwise expected. Update to Apache Commons BCEL 6.6.0.

Category

9.8
CVSS
Severity: Critical
CVSS 3.1 •
EPSS 3.89% Top 15%
Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org Vendor Advisory gentoo.org Vendor Advisory apache.org
Affected: Apache Software Foundation Apache Commons BCEL
Published at:
Updated at:

References

Link Tags
https://lists.apache.org/thread/lfxk7q8qmnh5bt9jm6nmjlv5hsxjhrz4 mailing list vendor advisory
http://www.openwall.com/lists/oss-security/2022/11/07/2 third party advisory mailing list
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LX3HEB4TV2BVCGDTK5BCLSYOZNQTOBN4/ vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QMVX6COVXZVS5GPWDODIRW6Z2GE7RPAQ/ vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QAMRHAKGIKZNHRBB4VLYTOIOIMMXCUCD/ vendor advisory
https://security.gentoo.org/glsa/202401-25 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2022-42920?
CVE-2022-42920 has been scored as a critical severity vulnerability.
How to fix CVE-2022-42920?
To fix CVE-2022-42920, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2022-42920 being actively exploited in the wild?
It is possible that CVE-2022-42920 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~4% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2022-42920?
CVE-2022-42920 affects Apache Software Foundation Apache Commons BCEL.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.