Vulnerability · Published Oct 16, 2024 · Assigned by GitHub_M

CVE-2024-45797LibHTP's unbounded header handling leads to denial service

High 7.5

In plain English

A high-severity resource allocation without limits in libhtp from OISF. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 55% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.5High

Exploit odds (30 days)0.7%top 45.4% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

LibHTP is a security-aware parser for the HTTP protocol and the related bits and pieces. Prior to version 0.5.49, unbounded processing of HTTP request and response headers can lead to excessive CPU time and memory utilization, possibly leading to extreme slowdowns. This issue is addressed in 0.5.49.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Alpine:v3.20	suricata	7.0.7-r0	ALPINE-CVE-2024-45797
Alpine:v3.21	suricata	7.0.7-r0	ALPINE-CVE-2024-45797
Alpine:v3.22	suricata	7.0.7-r0	ALPINE-CVE-2024-45797
Alpine:v3.23	suricata	7.0.7-r0	ALPINE-CVE-2024-45797
Alpine:v3.24	suricata	7.0.7-r0	ALPINE-CVE-2024-45797
Debian:12	libhtp	1:0.5.42-1+deb12u1	DEBIAN-CVE-2024-45797
Debian:13	libhtp	1:0.5.49-1	DEBIAN-CVE-2024-45797

Affected products (as reported)

Vendor	Product	Versions
OISF	libhtp	< 0.5.49

Weakness: CWE-770 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

https://github.com/OISF/libhtp/security/advisories/GHSA-rqqp-24ch-248f x_refsource_CONFIRM
https://redmine.openinfosecfoundation.org/issues/7191 x_refsource_MISC
https://lists.debian.org/debian-lts-announce/2025/09/msg00009.html