OISF Suricata up to 7.0.12/8.0.1 HTTP Content Type stack-based overflow

Summaryinfo

A vulnerability described as critical has been identified in OISF Suricata up to 7.0.12/8.0.1. This affects an unknown function of the component HTTP Content Type Handler. The manipulation results in stack-based overflow. This vulnerability is known as CVE-2025-64333. It is possible to launch the attack remotely. No exploit is available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability, which was classified as critical, was found in OISF Suricata up to 7.0.12/8.0.1. Affected is an unknown code block of the component HTTP Content Type Handler. The manipulation with an unknown input leads to a stack-based overflow vulnerability. CWE is classifying the issue as CWE-121. A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function). This is going to have an impact on availability. CVE summarizes:

Suricata is a network IDS, IPS and NSM engine developed by the OISF (Open Information Security Foundation) and the Suricata community. Prior to versions 7.0.13 and 8.0.2, a large HTTP content type, when logged can cause a stack overflow crashing Suricata. This issue has been patched in versions 7.0.13 and 8.0.2. A workaround for this issue involves limiting stream.reassembly.depth to less then half the stack size. Increasing the process stack size makes it less likely the bug will trigger.

The advisory is shared for download at github.com. This vulnerability is traded as CVE-2025-64333 since 10/30/2025. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are neither technical details nor an exploit publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 276956 (Linux Distros Unpatched Vulnerability : CVE-2025-64333), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 7.0.13 or 8.0.2 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (276956). Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

• OISF

Name

• Suricata

Version

• 7.0.0
• 7.0.1
• 7.0.2
• 7.0.3
• 7.0.4
• 7.0.5
• 7.0.6
• 7.0.7
• 7.0.8
• 7.0.9
• 7.0.10
• 7.0.11
• 7.0.12
• 8.0.0
• 8.0.1

License

• open-source

Website

• Product: https://github.com/OISF/suricata/

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Once again VulDB remains the best source for vulnerability data.

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