Information exposure through timing discrepancy in IBM Events Operator

Published: 2023-09-26
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2022-4304
Exploitation vector Network
Public exploit N/A
Vulnerable software
Events Operator
Other software / Other software solutions

Vendor IBM Corporation

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Information Exposure Through Timing Discrepancy

EUVDB-ID: #VU71993

Risk: Medium


CVE-ID: CVE-2022-4304


Exploit availability:


The vulnerability allows a remote attacker to obtain sensitive information.

The vulnerability exists due to a timing based side channel exists in the OpenSSL RSA Decryption implementation. A remote attacker can perform a Bleichenbacher style attack and decrypt data sent over the network.

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.


Install update from vendor's website.

Vulnerable software versions

Events Operator : before 4.8.0

Fixed software versions

CPE2.3 External links

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?