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How the mentioned CVE works:
- Suricata processes HTTP network traffic.
- It logs HTTP content type headers.
- A large content type string exceeds stack buffer.
- Insufficient bounds checking in logging function.
- Fixed-size stack buffer overflows during copy.
- This corrupts adjacent memory on stack.
- Leads to application crash or termination.
- Can be triggered remotely via network.
- Attackers send crafted HTTP packets.
- Specifically, with oversized Content-Type header.
- Vulnerability activates when logging enabled.
- Stream reassembly depth influences overflow.
- Higher depth allows larger content processing.
- Stack overflow crashes Suricata engine.
- Causes denial of service for IDS/IPS.
- Potentially allows remote code execution.
- Patched by validating content type length.
- Workaround reduces stream.reassembly.depth.
- Increasing stack size mitigates risk.
- Fixed in versions 7.0.13 and 8.0.2.
Platform: Suricata
Version: Before 7.0.13/8.0.2
Vulnerability: Stack overflow
Severity: Critical
Date: 11/26/2025
Prediction: Patched in 2025
What Undercode Say:
Analytics:
Bash commands:
suricata –version
grep stream.reassembly.depth suricata.yaml
sed -i ‘s/stream.reassembly.depth:./stream.reassembly.depth: 1024/’ suricata.yaml
Codes:
// Vulnerable log function snippet
void log_http_content_type(char type) {
char buffer[bash];
strcpy(buffer, type); // Overflow here
}
How Exploit:
Craft HTTP packets with oversized Content-Type headers to trigger stack overflow and crash Suricata.
Protection from this CVE:
Update to Suricata 7.0.13 or 8.0.2. Limit stream.reassembly.depth configuration.
Impact:
Denial of service, potential remote code execution.
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Sources:
Reported By: nvd.nist.gov
Extra Source Hub:
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