CVE-2025-29917: Suricata decode_base64: signature can do large memory allocation
Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. The bytes setting in the decodebase64 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.
Affected Software
Remediation
Event History
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.