Cryptographic key disclosure via elided buffer clearing
Published May 18, 2023 · Updated Jan 21, 2025
Memory disclosure in Silicon Labs Gecko Platform 4.2.1 and earlier allows remote authenticated users to recover duplicated key material. The compiler treats buffer clearing in sli_crypto_transparent_aead_decrypt_tag as a dead store and removes it, leaving a key copy in RAM. Exploitation requires authenticated network access and access to the affected memory contents; the documented consequence is key disclosure without data modification or service interruption.
Summary
What happened
Memory disclosure in Silicon Labs Gecko Platform 4.2.1 and earlier allows remote authenticated users to recover duplicated key material. The compiler treats buffer clearing in sli_crypto_transparent_aead_decrypt_tag as a dead store and removes it, leaving a key copy in RAM. Exploitation requires authenticated network access and access to the affected memory contents; the documented consequence is key disclosure without data modification or service interruption.
The record
- CVE
- CVE-2023-32097
- Published
- May 18, 2023
- Updated
- Jan 21, 2025
- Vendor
- Silicon Laboratories
- Product
- Gecko Platform
- Classifications
- CWE-14
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- May 18, 2023CVE publishedPublication date reported by the CVE source.
- Jan 21, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=0 <4.2.2
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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