What’s Vulnerable › Vulnerabilities

CVE-2024-38535: Suricata http2: oom from duplicate headers

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-07-11 · updated 2026-06-17
• Weakness: CWE-770

Description

Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Suricata can run out of memory when parsing crafted HTTP/2 traffic. Upgrade to 6.0.20 or 7.0.6.

Affected products

• OISF suricata: before 6.0.20; from 7.0.0 before 7.0.6 — fixed in 6.0.20, 7.0.6

How to fix

Upgrade to a fixed version: OISF suricata 6.0.20, 7.0.6. Check the vendor advisory for mitigations.

References

• https://github.com/OISF/suricata/commit/62d5cac1b8483d5f9d2b79833a4e59f5d80129b7
• https://github.com/OISF/suricata/commit/c82fa5ca0d1ce0bd8f936e0b860707a6571373b2
• https://github.com/OISF/suricata/security/advisories/GHSA-cg8j-7mwm-v563
• https://redmine.openinfosecfoundation.org/issues/7104
• https://redmine.openinfosecfoundation.org/issues/7105
• https://redmine.openinfosecfoundation.org/issues/7112
• https://github.com/OISF/suricata/commit/62d5cac1b8483d5f9d2b79833a4e59f5d80129b7
• https://github.com/OISF/suricata/commit/c82fa5ca0d1ce0bd8f936e0b860707a6571373b2
• https://github.com/OISF/suricata/security/advisories/GHSA-cg8j-7mwm-v563
• https://redmine.openinfosecfoundation.org/issues/7104
• https://redmine.openinfosecfoundation.org/issues/7105
• https://redmine.openinfosecfoundation.org/issues/7112

Get alerted when CVE-2024-38535 or the next vulnerability affects your stack