TI-2024-25770 Aliases CVE-2024-38535

Suricata http2: oom from duplicate headers

MEDIUM 41CWE-770Published 2024-07-11 · Updated 2024-08-02

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Denial of service
Confidentiality · integrity · availability: None · None · High
Fix status: Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-770.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.01172 67th percentileScored 2026-11-07

Fix Fixed suricata (OISF): 6.0.20, 7.0.6

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: Yes
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
OISF	suricata	before 6.0.20; 7.0.0 to before 7.0.6	6.0.20, 7.0.6	Patch available	CNA

suricata VendorOISF Affected before 6.0.20; 7.0.0 to before 7.0.6 Fixed in 6.0.20, 7.0.6 Patch available CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:oisf:suricata::::::::	before 6.0.20; 7.0.0 to before 7.0.6	Vulnerable	OISF

cpe:2.3:a:oisf:suricata:*:*:*:*:*:*:*:* Versions before 6.0.20; 7.0.0 to before 7.0.6 Vulnerable ·OISF

Remediation

Fix · CNA suricata (OISF) Fixed in 6.0.20, 7.0.6

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product

Red Hat

Timeline

2026-10-02 Threatist record created from CVE-2024-38535

References

Patch 2

Advisory 1

https://github.com/OISF/suricata/security/advisories/GHSA-cg8j-7mwm-v563

Other 3

TI-2026-33506 ikev2: unbounded client transform storage can lead to resource exhaustion CVSS 3.1HIGH 7.5
TI-2026-33484 Suricata lua/tls: null dereference in TlsGetCertInfo CVSS 3.1HIGH 7.5
TI-2024-31811 Suricata ja4: invalid alpn leads to panic CVSS 3.1HIGH 7.5
TI-2020-13673 Directory Traversal vulnerability found in Pfsense v.2.1.3 and Pfsense Suricata v.1.4.6… CVSS 3.1HIGH 7.5
TI-2023-17928 In Suricata before 6.0.13, an adversary who controls an external source of Lua rules may… CVSS 3.1CRITICAL 9.8
TI-2026-63304 Use after free in OISF Suricata CVSS 3.1CRITICAL 9.4

See all 99 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences