CVE-2025-29917

Suricata decode_base64: signature can do large memory allocation

Published Apr 10, 2025 CVSS 3.1 · 6.2 Medium EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2025-10710 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.
History
Type Values Removed Values Added
First Time appeared Oisf
Oisf suricata
CPEs cpe:2.3:a:oisf:suricata:*:*:*:*:*:*:*:*
Vendors & Products Oisf
Oisf suricata
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
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.
Title Suricata decode_base64: signature can do large memory allocation
Weaknesses CWE-770
References
Metrics cvssV3_1

{'score': 6.2, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
Apr 11, 2025, 4:03 PM
Reserved
Mar 12, 2025, 1:42 PM
Status
Analyzed
Published
Apr 10, 2025, 9:15 PM
Modified
Jun 17, 2026, 9:05 AM