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Fencer Vulns
high 7.5

CVE-2024-28871 json

Excessive CPU used on malformed traffic

published 2024-04-04 2 y ago modified 2026-06-17 4 mo ago also EUVD-2024-25941

cvss
7.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.8%
EPSS 0.8% chance of exploitation in 30 days, percentile 58%
public exploits
0
none known

Summary

LibHTP is a security-aware parser for the HTTP protocol and the related bits and pieces. Version 0.5.46 may parse malformed request traffic, leading to excessive CPU usage. Version 0.5.47 contains a patch for the issue. No known workarounds are available.

Patch / fix

  • libhtp Debian 13 1:0.5.47-1

debian advisories DEBIAN-CVE-2024-28871

  • 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-2024-28871

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

  • libhtp openSUSE Tumbleweed 0.5.48-2.1

opensuse advisories openSUSE-SU-2024:14016-1

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
partial
Assessed
2 y ago

Exploit prediction

0.84% chance of exploitation in the next 30 days, higher than 58% of all scored CVEs (FIRST EPSS, 2026-11-08).

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.