CVE-2024-28871 Excessive CPU used on malformed traffic

What is CVE-2024-28871?

CVE-2024-28871 is a high-severity denial of service vulnerability in OISF libhtp, published on 4 Apr 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

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.

Weakness: CWE-770

Which versions are affected by CVE-2024-28871?

It affects 1 product.

Products include Oisf Libhtp.

How do I fix CVE-2024-28871?

Upgrade to a fixed version.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2024-28871 being exploited?

There is no known exploitation of CVE-2024-28871 in the wild and no public exploit code.

Other vulnerabilities in OISF libhtp

• CVE-2018-10243 Memory corruption in n/a Critical 9.8
• CVE-2025-53537 LibHTP's memory leak with lzma can lead to resource starvation High 7.5
• CVE-2024-45797 LibHTP's unbounded header handling leads to denial service High 7.5
• CVE-2015-0928 Null dereference in n/a High 7.5
• CVE-2019-17420 Security feature bypass in n/a Medium 5.3

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2024-28871, GHSA-ffr2-45w9-7wmg, UBUNTU-CVE-2024-28871, openSUSE-SU-2024:14016-1.