CVE-2024-38535highCWE-770

CVE-2024-38535: high-severity vulnerability in OISF suricata

Suricata http2: oom from duplicate headers

Published · Updated

Follow this CVE+ Monitor suricata+ Monitor suricata

E-mail alert when it lands in KEV, gets a public PoC or its score goes up.

21Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 7.5epss 1.2%
In short

Suricata can crash due to running out of memory when processing specially crafted HTTP/2 traffic with duplicate headers. This affects network security monitoring and could disrupt threat detection.

Technical detail

A memory exhaustion vulnerability exists in Suricata's HTTP/2 parser when handling duplicate headers in crafted packets. An attacker sending malicious HTTP/2 traffic can trigger excessive memory consumption, causing denial of service. The vulnerability affects versions prior to 6.0.20 and 7.0.6.

Summary generated and translated by AI from the official 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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products
OISF · suricata
Related CVEs — OISF suricata

In the same product, most dangerous first.

CVE-2026-45769HIGHikev2: unbounded client transform storage can lead to resource exhaustionEPSS 1.8%CVE-2024-23836HIGHcrafted traffic can cause denial of serviceEPSS 1.2%CVE-2024-55627MEDIUMSuricata segfault on StreamingBufferSlideToOffsetWithRegionsEPSS 1.0%CVE-2024-32663HIGHSuricata 's http2 parser contains an improper compressed header handling can lead to resource starvationEPSS 1.0%CVE-2024-23835HIGHSuricata's pgsql: memory exhaustion use on record parsingEPSS 0.9%CVE-2024-38536HIGHSuricata http/range: NULL-ptr deref when http.memcap is reachedEPSS 0.9%