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Status published
Medium
CVE-2025-29917
Suricata decode_base64: signature can do large memory allocation
Vulnerability 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.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
No credits recorded in the NVD database.
References
More from OISF
View All →CVE-2025-64344
Suricata is vulnerable to a stack overflow from unbounded stack allocation in LuaPushStringBuffer
High
7.5
CVE-2025-64335
Suricata is vulnerable to a null deref when used with base64_data
High
7.5
CVE-2025-64334
Suricata is vulnerable to unbounded memory growth for decompression
High
7.5
CVE-2025-64333
Suricata is vulnerable to a stack overflow from big content-type
High
7.5
CVE-2025-64332
Suricata is vulnerable to a stack overflow on larger compressed data
High
7.5
Affected Vendor
OISF
View all reports →Affected Software
suricata
Vulnerable Versions:
< 7.0.9
Timeline
Official Publish:
April 10th, 2025
Last Modified:
April 11th, 2025
Added to House:
July 22nd, 2026
CVSS Vectors
V3:
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H