ModSecurity

Libmodsecurity is one component of the ModSecurity v3 project. The library codebase serves as an interface to ModSecurity Connectors taking in web traffic and applying traditional ModSecurity processing. In general, it provides the capability to load/interpret rules written in the ModSecurity...

[SECURITY] Fedora 44 Update: nginx-mod-modsecurity-1.0.4-18.fc44

The ModSecurity-nginx connector is the connection point between nginx and libmodsecurity ModSecurity v3. Said another way, this project provides a communication channel between nginx and libmodsecurity. This connector is required to use LibModSecurity with nginx. The ModSecurity-nginx connector...

[SECURITY] Fedora 45 Update: libmodsecurity-3.0.17-2.fc45

Libmodsecurity is one component of the ModSecurity v3 project. The library codebase serves as an interface to ModSecurity Connectors taking in web traffic and applying traditional ModSecurity processing. In general, it provides the capability to load/interpret rules written in the ModSecurity...

WS-2026-0085

libmodsecurity ModSecurity v3 3.0.5 through 3.0.16 accepts the RFC 2231 filename multipart parameter but exposes only the plain filename to MULTIPARTFILENAME/FILES rules, so filename="safe.jpg"; filename=UTF-8''shell.php passes filename rules while RFC-compliant backends store shell.php. Fixed in...

BIT-MODSECURITY-2025-27110 Libmodsecurity3 has possible bypass of encoded HTML entities

Libmodsecurity is one component of the ModSecurity v3 project. The library codebase serves as an interface to ModSecurity Connectors taking in web traffic and applying traditional ModSecurity processing. A bug that exists only in Libmodsecurity3 version 3.0.13 means that, in 3.0.13, Libmodsecurit...

CVE-2025-27110 Libmodsecurity3 has possible bypass of encoded HTML entities

Libmodsecurity is one component of the ModSecurity v3 project. The library codebase serves as an interface to ModSecurity Connectors taking in web traffic and applying traditional ModSecurity processing. A bug that exists only in Libmodsecurity3 version 3.0.13 means that, in 3.0.13, Libmodsecurit...

CVE-2025-27110

Libmodsecurity is one component of the ModSecurity v3 project. The library codebase serves as an interface to ModSecurity Connectors taking in web traffic and applying traditional ModSecurity processing. A bug that exists only in Libmodsecurity3 version 3.0.13 means that, in 3.0.13, Libmodsecurit...

[SECURITY] Fedora 39 Update: libmodsecurity-3.0.12-1.fc39

Libmodsecurity is one component of the ModSecurity v3 project. The library codebase serves as an interface to ModSecurity Connectors taking in web traffic and applying traditional ModSecurity processing. In general, it provides the capability to load/interpret rules written in the ModSecurity...

Fedora 38 : libmodsecurity (2024-698e541c52)

The remote Fedora 38 host has a package installed that is affected by a vulnerability as referenced in the FEDORA-2024-698e541c52 advisory. - Update to 3.0.12 - Security fix for CVE-2024-1019 Tenable has extracted the preceding description block directly from the Fedora security advisory. Note th...

[SECURITY] Fedora 36 Update: libmodsecurity-3.0.8-1.fc36

Libmodsecurity is one component of the ModSecurity v3 project. The library codebase serves as an interface to ModSecurity Connectors taking in web traffic and applying traditional ModSecurity processing. In general, it provides the capability to load/interpret rules written in the ModSecurity...

[SECURITY] Fedora 31 Update: libmodsecurity-3.0.3-6.fc31

Libmodsecurity is one component of the ModSecurity v3 project. The library codebase serves as an interface to ModSecurity Connectors taking in web traffic and applying traditional ModSecurity processing. In general, it provides the capability to load/interpret rules written in the ModSecurity...

Fedora: Security Advisory for libmodsecurity (FEDORA-2020-f7ba0ac7a4)

The remote host is missing an update for the Copyright C 2020 Greenbone Networks GmbH Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-or-later This program is free software; you can...

ModSecurity For Nginx Use-After-Free

Hey, TL;DR: UAF in a "non-release" version of ModSecurity for Nginx. !RCE|DoS, no need to panic. Plus some old and even older exploitation vectors. / 1. Use-After-Free UAF / During one of the engagements my team tested a WAF running in production Nginx + ModSecurity + OWASP Core Rule Set 123. In...