5.9

CVE-2022-4304

A 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.

Data is provided by the National Vulnerability Database (NVD)
OpenSSL ≫ OpenSSL Version >= 1.0.2 < 1.0.2zg
OpenSSL ≫ OpenSSL Version >= 1.1.1 < 1.1.1t
OpenSSL ≫ OpenSSL Version >= 3.0.0 < 3.0.8
Stormshield ≫ Endpoint Security Version < 7.2.40
Stormshield ≫ Sslvpn Version < 3.2.1
Stormshield ≫ Stormshield Network Security Version >= 2.7.0 < 2.7.11
Stormshield ≫ Stormshield Network Security Version >= 2.8.0 < 3.7.34
Stormshield ≫ Stormshield Network Security Version >= 3.8.0 < 3.11.22
Stormshield ≫ Stormshield Network Security Version >= 4.0.0 < 4.3.16
Stormshield ≫ Stormshield Network Security Version >= 4.4.0 < 4.6.3
Zu dieser CVE wurde keine CISA KEV oder CERT.AT-Warnung gefunden.
EPSS Metriken
Type Source Score Percentile
EPSS FIRST.org 0.23% 0.458
CVSS Metriken
Source Base Score Exploit Score Impact Score Vector string
nvd@nist.gov 5.9 2.2 3.6
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
134c704f-9b21-4f2e-91b3-4a467353bcc0 5.9 2.2 3.6
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
CWE-203 Observable Discrepancy

The product behaves differently or sends different responses under different circumstances in a way that is observable to an unauthorized actor, which exposes security-relevant information about the state of the product, such as whether a particular operation was successful or not.