CVE-2025-29917

Suricata decode_base64: signature can do large memory allocation

Description

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.

Category

6.2
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.02%
Vendor Advisory github.com
Affected: OISF suricata
Published at:
Updated at:

References

Link Tags
https://github.com/OISF/suricata/security/advisories/GHSA-x8c9-8553-j9px vendor advisory
https://github.com/OISF/suricata/commit/32d0bd2bbb4d486623dec85a94952fde2515f2f0 patch
https://redmine.openinfosecfoundation.org/issues/7613 permissions required

Frequently Asked Questions

What is the severity of CVE-2025-29917?
CVE-2025-29917 has been scored as a medium severity vulnerability.
How to fix CVE-2025-29917?
To fix CVE-2025-29917, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2025-29917 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2025-29917 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-29917?
CVE-2025-29917 affects OISF suricata.
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