Excessive Iteration in IBM Event Processing

Published: 2024-02-16
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2023-4043
Exploitation vector Network
Public exploit N/A
Vulnerable software
Event Processing
Other software / Other software solutions

Vendor IBM Corporation

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Excessive Iteration

EUVDB-ID: #VU85304

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-4043

CWE-ID: CWE-834 - Excessive Iteration

Exploit availability: No


The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to built-in support for parsing numbers with large scale in Java has a number of edge cases where the input text of a number can lead to much larger processing time than one would expect. A remote attacker can trigger excessive iteration and perform a denial of service (DoS) attack.


Install update from vendor's website.

Vulnerable software versions

Event Processing : before 1.1.1

External links


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.