Vulnerability identifier: #VU87279
Vulnerability risk: Medium
CVSSv3.1: 4.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-203
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
Opencryptoki
Universal components / Libraries /
Libraries used by multiple products
Vendor: Opencryptoki Project
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.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
Opencryptoki: 3.0 - 3.22.0
External links
http://bugzilla.redhat.com/show_bug.cgi?id=2260407
http://github.com/opencryptoki/opencryptoki/commit/2ea019ee2b09f15724d808382d53baca03403288
http://github.com/opencryptoki/opencryptoki/commit/7ffc0e135b4d923d686be536aa7bf69405a360a1
http://github.com/opencryptoki/opencryptoki/commit/c26e049bf40d656bc51429bad190b82fbf63f0c7
http://github.com/opencryptoki/opencryptoki/issues/731
http://github.com/opencryptoki/opencryptoki/pull/737
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.