Threat Intelligence Database

CVE-2026-73974 is a path traversal vulnerability in linuxfabrik monitoring-plugins prior to version 7.0.0 and linuxfabrik-lib prior to 6.1.0. The issue arises because the test helper function lib.lftest.test() improperly handles filesystem paths from a hidden --test argument, allowing unauthorized file reads without path confinement. This vulnerability enables an attacker with sudo-authorized plugin access to read arbitrary root-readable files. The flaw affects multiple plugins that expose file content or existence checks. The vulnerability is fixed by confining fixture reads to a safe directory and routing bypasses through the helper in the fixed versions.

Linuxfabrik Monitoring Plugins and linuxfabrik-lib contain a local privilege escalation vulnerability due to unsafe command execution. User-controlled input is embedded in shell command strings that are split and executed, allowing injection of arbitrary commands. This affects versions prior to linuxfabrik-lib 5.0.0 and Linuxfabrik Monitoring Plugins 6.0.0. The vulnerability allows a compromised Nagios or Icinga account to execute commands as root via sudo. The issue is fixed by using argument lists, disabling shell command splitting, and sanitizing inputs.

linuxfabrik-lib provides Python modules for database access, caching, shell execution, and API integrations. Prior to version 4.2.0, db_sqlite.py created SQLite databases at predictable paths in the shared /tmp directory and followed attacker-created symbolic links at those paths. An attacker who controls a local monitoring account can create a symlink such as /tmp/linuxfabrik-monitoring-plugins-docker-stats.db and then trigger a sudo-authorized plugin, causing the root process to create or modify the symlink target. The primitive can overwrite arbitrary paths, cause denial of service, or manipulate an existing SQLite database through a crafted rollback journal or write-ahead log. The Monitoring Plugins integration also moved plugin caches through lib.db_sqlite.get_db_path() so they use the secured per-user directory. This issue is fixed in version 4.2.0.

Linuxfabrik Monitoring Plugins provides monitoring plugins for Icinga, Nagios, and related systems. Prior to version 5.1.0, the shipped assets/sudoers/Debian.sudoers policy allowed the nagios or icinga account to execute /usr/bin/apt-get as root without restricting its arguments. An attacker who already controls that monitoring account can supply the APT::Update::Pre-Invoke option to execute an arbitrary command while apt-get runs with root privileges, resulting in a root shell and complete compromise of the host. The vulnerable rule supports the check-plugins/deb-updates/deb-updates plugin, but it authorized arbitrary apt-get argument sequences rather than only the required apt-get update --quiet 2 command. This issue is fixed in version 5.1.0.

linuxfabrik-lib provides Python modules for database access, caching, shell execution, and API integrations. Prior to version 6.0.0, lib.url.fetch() followed cross-origin redirects while forwarding caller-supplied credential headers other than Authorization and Cookie, allowing a malicious redirect-capable server to receive headers such as X-Auth-Token from authenticated monitoring requests. This issue is fixed in version 6.0.0.