Allocation of Resources Without Limits or Throttling in Suricata - CVE-2024-38535
Published: July 11, 2024 / Updated: April 27, 2026
Vulnerability identifier: #VU128043
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2024-38535
CWE-ID: CWE-770
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to allocation of resources without limits or throttling in the HTTP/2 parser when parsing crafted HTTP/2 traffic with duplicate headers. A remote attacker can send specially crafted HTTP/2 traffic to cause a denial of service.
Affected software
Suricata
How to mitigate CVE-2024-38535
Install security update from vendor's website.
Suricata - addressed in versions 6.0.20, 7.0.6