Observable discrepancy in Opencryptoki - CVE-2024-0914
Published: March 8, 2024
Vulnerability identifier: #VU87279
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2024-0914
CWE-ID: CWE-203
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Opencryptoki Project
Affected software:
Opencryptoki
Opencryptoki
Detailed vulnerability description
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.
How to mitigate CVE-2024-0914
Install updates from vendor's website.
Sources
- 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