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Fedora 37 CVE-2022-42920 Critical: bcel Out-Of-Bounds Bytecode Risk

fedora
Calendar Grey December 11, 2022
Dist Fedora Esm H88
Uncover the critical security patch for Fedora regarding bcel that tackles CVE-2022-42921, safeguarding against potential bytecode alteration threats.
Security fix: CVE-2022-42920 bcel: Apache-Commons-BCEL: arbitrary bytecode produced via out-of-bounds writing

Summary

The Byte Code Engineering Library (formerly known as JavaClass) is

intended to give users a convenient possibility to analyze, create, and

manipulate (binary) Java class files (those ending with .class). Classes

are represented by objects which contain all the symbolic information of

the given class: methods, fields and byte code instructions, in

particular. Such objects can be read from an existing file, be

transformed by a program (e.g. a class loader at run-time) and dumped to

a file again. An even more interesting application is the creation of

classes from scratch at run-time. The Byte Code Engineering Library

(BCEL) may be also useful if you want to learn about the Java Virtual

Machine (JVM) and the format of Java .class files. BCEL is already

being used successfully in several projects such as compilers,

optimizers, obsfuscators and analysis tools, the most popular probably

being the Xalan XSLT processor at Apache.

Security fix: CVE-2022-42920 bcel: Apache-Commons-BCEL: arbitrary bytecode

produced via out-of-bounds writing

* Thu Dec 1 2022 Mikolaj Izdebski - 6.5.0-3

- Fix arbitrary bytecode produced via out-of-bounds writing

- Resolves: CVE-2022-42920

[ 1 ] Bug #2143514 - CVE-2022-42920 bcel: Apache-Commons-BCEL: arbitrary bytecode produced via out-of-bounds writing [fedora-37]

https://bugzilla.redhat.com/show_bug.cgi?id=2143514

su -c 'dnf upgrade --advisory FEDORA-2022-01a56f581c' at the command

line. For more information, refer to the dnf documentation available at

https://dnf.readthedocs.io/en/latest/command_ref.html

All packages are signed with the Fedora Project GPG key. More details on the

GPG keys used by the Fedora Project can be found at

https://fedoraproject.org/security/

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Change Log

References

Update Instructions

Severity
critical
Lowest
Low
Medium
High
Critical

Product: Fedora 37
Version: 6.5.0
Release: 3.fc37
Summary: Byte Code Engineering Library

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