CVE-2025-53537

EUVD-2025-22472
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
GitHub_MCNA
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 24%
Affected Products (NVD)
VendorProductVersion
oisflibhtp
𝑥
< 0.5.51
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
libhtp
bookworm
1:0.5.42-1+deb12u1
not-affected
bullseye
1:0.5.36-1
not-affected
bullseye (security)
1:0.5.36-1+deb11u1
fixed
forky
1:0.5.52-2
fixed
sid
1:0.5.52-2
fixed
trixie
1:0.5.50-1+deb13u1
fixed
Common Weakness Enumeration
References
https://github.com/OISF/libhtp/commit/9037ea35110a0d97be5cedf8d31fb4cd9a38c7a7
https://github.com/OISF/libhtp/security/advisories/GHSA-v3qq-h8mh-vph7