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Fencer Vulns
high 7.5

CVE-2024-45797 json

LibHTP's unbounded header handling leads to denial service

published 2024-10-16 2 y ago modified 2026-06-17 4 mo ago also EUVD-2024-41605

cvss
7.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.7%
EPSS 0.7% chance of exploitation in 30 days, percentile 54%
public exploits
0
none known

Summary

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.

Patch / fix

  • OISF libhtp 0.5.49
  • libhtp Debian 12 1:0.5.42-1+deb12u1
  • libhtp Debian 13 1:0.5.49-1

debian advisories DEBIAN-CVE-2024-45797

  • libhtp Ubuntu Pro 16.04 LTS 0.5.15-1ubuntu0.1~esm1
  • libhtp Ubuntu Pro 18.04 LTS 1:0.5.26-1ubuntu0.1~esm1
  • libhtp Ubuntu Pro 20.04 LTS 1:0.5.32-1ubuntu0.1~esm1
  • libhtp Ubuntu Pro 22.04 LTS 1:0.5.39-1ubuntu0.1~esm1
  • libhtp Ubuntu Pro 24.04 LTS 1:0.5.46-1ubuntu2+esm1

ubuntu advisories UBUNTU-CVE-2024-45797

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • suricata openSUSE Tumbleweed 8.0.0-1.1

opensuse advisories openSUSE-SU-2025:15394-1

  • suricata Alpine 3.24, Alpine 3.23, Alpine 3.22 +2 more 7.0.7-r0

alpine advisories ALPINE-CVE-2024-45797

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
partial
Assessed
2 y ago

Exploit prediction

0.73% chance of exploitation in the next 30 days, higher than 54% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • github.com https://github.com/OISF/libhtp/security/advisories/GHSA-rqqp-24ch-248f referenced PoC, tagged "exploit" by a source, unverified
  • redmine.openinfosecfoundation.org https://redmine.openinfosecfoundation.org/issues/7191 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

  • OISF libhtp

Classification

Weakness
  • CWE-770 Allocation of Resources Without Limits or Throttling

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.