What is the severity of CVE-2025-29917?

The severity of CVE-2025-29917 is high due to the potential for large memory allocations that may lead to denial-of-service vulnerabilities.

How do I fix CVE-2025-29917?

To fix CVE-2025-29917, update Suricata to version 7.0.10 or later where the insufficient limitation of the bytes setting in the decode_base64 keyword is addressed.

What versions of Suricata are affected by CVE-2025-29917?

Suricata versions up to and including 7.0.9 are affected by CVE-2025-29917.

What is the impact of CVE-2025-29917?

The impact of CVE-2025-29917 includes possible memory exhaustion leading to service disruption for users of the Suricata system.

Is CVE-2025-29917 a network security vulnerability?

Yes, CVE-2025-29917 is a network security vulnerability that affects the Intrusion Detection and Prevention capabilities of Suricata.

Vulnerability/
CVE-2025-29917

medium

6.2

CWE

770

10/4/2025

11/4/2025

CVE-2025-29917: Suricata decode_base64: signature can do large memory allocation

First published: Thu Apr 10 2025(Updated: )

Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. The bytes setting in the decode_base64 keyword is not properly limited. Due to this, signatures using the keyword and setting can cause large memory allocations of up to 4 GiB per thread. This vulnerability is fixed in 7.0.9.

Credit: security-advisories@github.com

Affected Software	Affected Version	How to fix
Suricata	<7.0.9

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Frequently Asked Questions

What is the severity of CVE-2025-29917?
The severity of CVE-2025-29917 is high due to the potential for large memory allocations that may lead to denial-of-service vulnerabilities.
How do I fix CVE-2025-29917?
To fix CVE-2025-29917, update Suricata to version 7.0.10 or later where the insufficient limitation of the bytes setting in the decode_base64 keyword is addressed.
What versions of Suricata are affected by CVE-2025-29917?
Suricata versions up to and including 7.0.9 are affected by CVE-2025-29917.
What is the impact of CVE-2025-29917?
The impact of CVE-2025-29917 includes possible memory exhaustion leading to service disruption for users of the Suricata system.
Is CVE-2025-29917 a network security vulnerability?
Yes, CVE-2025-29917 is a network security vulnerability that affects the Intrusion Detection and Prevention capabilities of Suricata.

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