CVE-2022-4304
medium · 5.9A timing based side channel exists in the OpenSSL RSA Decryption implementation which could be sufficient to recover a plaintext across a network in a Bleichenbacher style attack. To achieve a successful decryption an attacker would have to be able to send a very large number of trial messages for decryption. The vulnerability affects all RSA padding modes: PKCS#1 v1.5, RSA-OEAP and RSASVE. For example, in a TLS connection, RSA is commonly used by a client to send an encrypted pre-master secret to the server. An attacker that had observed a genuine connection between a client and a server could use this flaw to send trial messages to the server and record the time taken to process them. After a sufficiently large number of messages the attacker could recover the pre-master secret used for the original connection and thus be able to decrypt the application data sent over that connection.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Weaknesses
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| openssl | openssl | >= 1.0.2, < 1.0.2zg |
| openssl | openssl | >= 1.1.1, < 1.1.1t |
| openssl | openssl | >= 3.0.0, < 3.0.8 |
| stormshield | endpoint_security | < 7.2.40 |
| stormshield | sslvpn | < 3.2.1 |
| stormshield | stormshield_network_security | >= 2.7.0, < 2.7.11 |
| stormshield | stormshield_network_security | >= 2.8.0, < 3.7.34 |
| stormshield | stormshield_network_security | >= 3.8.0, < 3.11.22 |
| stormshield | stormshield_network_security | >= 4.0.0, < 4.3.16 |
| stormshield | stormshield_network_security | >= 4.4.0, < 4.6.3 |
Check a specific version with /api/v1/cve/match.
References
Query this programmatically:
curl https://evil-db.io/api/v1/cve/CVE-2022-4304