RSA plaintext disclosure via variable-time padding checks
Published Jan 31, 2024 · Updated Mar 24, 2026
Timing side channel in openCryptoki before 3.23.0 allows remote attackers to recover RSA plaintext through PKCS#1 v1.5 ciphertext probes. RSA padding processing produces response times that vary with padding correctness and plaintext length instead of rejecting invalid ciphertexts in constant time. Exploitation requires repeated access to an application exposing token-backed RSA operations and sufficiently precise response timing.
Summary
What happened
Timing side channel in openCryptoki before 3.23.0 allows remote attackers to recover RSA plaintext through PKCS#1 v1.5 ciphertext probes. RSA padding processing produces response times that vary with padding correctness and plaintext length instead of rejecting invalid ciphertexts in constant time. Exploitation requires repeated access to an application exposing token-backed RSA operations and sufficiently precise response timing.
The record
- CVE
- CVE-2024-0914
- Published
- Jan 31, 2024
- Updated
- Mar 24, 2026
- Vendor
- Red Hat
- Product
- Red Hat Enterprise Linux 8
- Classifications
- CWE-203
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jan 31, 2024CVE publishedPublication date reported by the CVE source.
- Mar 24, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Affected versions are unavailable in this record. Check the vendor advisory for version and patch details.
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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