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CVE-2022-4304

Timing Oracle in RSA Decryption

Published: Feb 8, 2023Updated: Nov 4, 2025 Sources: CVE List NVD GHSA BDU csafCWE-203
NVD MITRE
5.9CVSSMEDIUM
EPSS Score
16.2%
Top 3.5%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

Hitachi Energy is aware of the vulnerability, CVE-2022-4304 in the OSS component OpenSSL, that affects the GMS600 versions that are listed below. An attacker successfully exploiting this vulnerability could 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. For immediate mitigation /workaround information, please refer to the General Mitigation Factors/Workarounds

CVSS Vector Breakdown

AV:NAC:HPR:NUI:NS:UC:HI:NA:N
Exploitability
AV:NAttack Vector
Network
AC:HAttack Complexity
High
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:NIntegrity
None
A:NAvailability
None
Open in CVSS calculator →

Weaknesses

CWE-203

Affected Products

OpenSSLOpenSSL Software FoundationOSS Libraries
Astra Linux Special EditionООО «РусБИТех-Астра»
On-premOS
Operating Systems / linux-distro
SUSE Linux Enterprise Server for SAP ApplicationsNovell Inc.
On-premOS
Operating Systems / linux-distro
Suse Linux Enterprise ServerNovell Inc.
On-premOS
Operating Systems / linux-distro
SUSE Linux Enterprise High Performance ComputingNovell Inc.
On-premOS
Operating Systems / linux-distro
openssl software foundationoss-projectUSOSS Librariesaka openssl.org, openssl foundation
ооо «русбитех-астра»commercialRUOperating Systemsaka rusbitech-astra
novell inc.commercialUSOperating Systems
and 30 more affected products View all →

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

Official Patch Available

MITRE ATT&CK

1 technique
Discovery
View detailed technique mapping

References

https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/OT/white/2026/icsa-26-141-01.json
raw.githubusercontent.com
https://publisher.hitachienergy.com/preview?DocumentID=8DBD000159&LanguageCode=en&DocumentPartId=&Action=launch
publisher.hitachienergy.com
https://www.cisa.gov/news-events/ics-advisories/icsa-26-141-01
cisa.gov
and 28 more references View all →

Timeline

Published
Feb 8, 2023
Last Updated
Nov 4, 2025

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