SB2024030807 - Timing side-channel attack in opencryptoki
Published: March 8, 2024
Security Bulletin ID
SB2024030807
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Observable discrepancy (CVE-ID: CVE-2024-0914)
The vulnerability allows a remote attacker to perform a timing side-channel attack.
The vulnerability exists due to observable discrepancy when processing RSA PKCS#1 v1.5 padded ciphertexts. A remote attacker can perform unauthorized RSA ciphertext decryption or signing, even without access to the corresponding private key.
Remediation
Install update from vendor's website.
References
- https://bugzilla.redhat.com/show_bug.cgi?id=2260407
- https://github.com/opencryptoki/opencryptoki/commit/2ea019ee2b09f15724d808382d53baca03403288
- https://github.com/opencryptoki/opencryptoki/commit/7ffc0e135b4d923d686be536aa7bf69405a360a1
- https://github.com/opencryptoki/opencryptoki/commit/c26e049bf40d656bc51429bad190b82fbf63f0c7
- https://github.com/opencryptoki/opencryptoki/issues/731
- https://github.com/opencryptoki/opencryptoki/pull/737