CVE-2022-4304 (GCVE-0-2022-4304)

Vulnerability from cvelistv5 – Published: 2023-02-08 19:04 – Updated: 2026-10-14 14:17
VLAI
Title
Timing Oracle in RSA Decryption
Summary
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.
Severity
5.9 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-03-06 15:57 UTC
CWE
  • timing based side channel attack
  • CWE-203 - Observable Discrepancy
Assigner
openssl CNA under the mitre root
CNA scorecard B 78/100 over 43 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
OpenSSL OpenSSL Affected: 3.0.0 , < 3.0.8 (semver)
Affected: 1.1.1 , < 1.1.1t (custom)
Affected: 1.0.2 , < 1.0.2zg (custom)
guessed Create a notification for this product.
Siemens SCALANCE W1750D (JP) Affected: 0 , < V8.10.0.9 (custom)
guessed Create a notification for this product.
Siemens SCALANCE W1750D (ROW) Affected: 0 , < V8.10.0.9 (custom)
guessed Create a notification for this product.
Siemens SCALANCE W1750D (USA) Affected: 0 , < V8.10.0.9 (custom)
guessed Create a notification for this product.
Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP Affected: V3.1.0 , < V3.1.5 (custom)
guessed Create a notification for this product.
Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP Affected: V3.1.0 , < V3.1.5 (custom)
guessed Create a notification for this product.
Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem Affected: 0 , < V1.1 (custom)
guessed Create a notification for this product.
Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP Affected: V3.1.0 , < V3.1.5 (custom)
guessed Create a notification for this product.
Date Public
2023-02-07 00:00
Credits
Hubert Kario from RedHat Dmitry Belyavsky from RedHat Hubert Kario from RedHat
Show details on NVD website
To clipboard 

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Sightings

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Nomenclature

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  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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Vulnerability timeline

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