Information disclosure via premature key zeroing
Published Nov 21, 2022 · Updated Aug 3, 2024
Use-after-free in Bouncy Castle BC-FJA before 1.0.2.4 allows local users to disclose key material on Java 13 and later. The JVM garbage collector can invoke finalize() and zero temporary internal keys while module methods still use them because their objects are no longer reachable. The condition affects uncertified Java 13 and later deployments, especially under memory pressure, and results in cryptographic-operation failures or disclosure through all-zero key values.
Summary
What happened
Use-after-free in Bouncy Castle BC-FJA before 1.0.2.4 allows local users to disclose key material on Java 13 and later. The JVM garbage collector can invoke finalize() and zero temporary internal keys while module methods still use them because their objects are no longer reachable. The condition affects uncertified Java 13 and later deployments, especially under memory pressure, and results in cryptographic-operation failures or disclosure through all-zero key values.
The record
- CVE
- CVE-2022-45146
- Published
- Nov 21, 2022
- Updated
- Aug 3, 2024
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-416
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Nov 21, 2022CVE publishedPublication date reported by the CVE source.
- Aug 3, 2024Record updatedLatest update available in the CVE record.
Exploitability
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What is affected?
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Published CVSS scores
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Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
- Bouncy Castle gctest demonstrationproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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