Arbitrary bytecode via out-of-bounds write
Published Nov 7, 2022 · Updated Aug 3, 2024
Out-of-bounds write in Apache Commons BCEL before 6.6.0 allows remote attackers to produce arbitrary bytecode via crafted input. BCEL APIs intended to alter limited class characteristics write beyond bounds when processing attacker-controllable values, enabling arbitrary bytecode generation. Exploitation requires an application to pass attacker-controlled data into these APIs; the resulting bytecode gives the attacker control over generated class contents.
Summary
What happened
Out-of-bounds write in Apache Commons BCEL before 6.6.0 allows remote attackers to produce arbitrary bytecode via crafted input. BCEL APIs intended to alter limited class characteristics write beyond bounds when processing attacker-controllable values, enabling arbitrary bytecode generation. Exploitation requires an application to pass attacker-controlled data into these APIs; the resulting bytecode gives the attacker control over generated class contents.
The record
- CVE
- CVE-2022-42920
- Published
- Nov 7, 2022
- Updated
- Aug 3, 2024
- Vendor
- The Apache Software Foundation
- Product
- Apache Commons BCEL
- Classifications
- CWE-787
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Nov 7, 2022CVE publishedPublication date reported by the CVE source.
- Aug 3, 2024Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
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- Affected versionversion=Apache Commons BCEL <6.6.0
What conditions does exploitation require?
What is affected?
Published CVSS scores
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Attacks
What attackers are doing with it
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Public exploit references
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Technologies
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Your stack
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