| Name | CVE-2025-53537 |
| Description | LibHTP is a security-aware parser for the HTTP protocol and its related bits and pieces. In versions 0.5.50 and below, there is a traffic-induced memory leak that can starve the process of memory, leading to loss of visibility. To workaround this issue, set `suricata.yaml app-layer.protocols.http.libhtp.default-config.lzma-enabled` to false. This issue is fixed in version 0.5.51. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| Debian Bugs | 1109838 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| libhtp (PTS) | bullseye | 1:0.5.36-1 | fixed |
| bullseye (security) | 1:0.5.36-1+deb11u1 | fixed | |
| bookworm | 1:0.5.42-1 | fixed | |
| trixie | 1:0.5.50-1 | vulnerable | |
| forky, sid | 1:0.5.51-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| libhtp | source | bullseye | (not affected) | |||
| libhtp | source | bookworm | (not affected) | |||
| libhtp | source | (unstable) | 1:0.5.51-1 | 1109838 |
[trixie] - libhtp <no-dsa> (Minor issue)
[bookworm] - libhtp <not-affected> (Vulnerable code introduced later)
[bullseye] - libhtp <not-affected> (Vulnerable code introduced later)
https://redmine.openinfosecfoundation.org/issues/7766
https://github.com/OISF/libhtp/security/advisories/GHSA-v3qq-h8mh-vph7
Introduced by: https://github.com/OISF/libhtp/commit/226580d502ae98c148aaecc4846f78694b5e253c (0.5.50)
Fixed by: https://github.com/OISF/libhtp/commit/9037ea35110a0d97be5cedf8d31fb4cd9a38c7a7 (0.5.51)