CyberRota Analysis
AI-GeneratedThe linuxfabrik-lib and Linuxfabrik Monitoring Plugins are vulnerable due to improper handling of user-controlled input in command strings, allowing attackers to inject malicious commands that can be executed with root privileges if a compromised monitoring account is exploited. This poses a significant risk to systems using these libraries, particularly those integrated with monitoring tools like Nagios or Icinga. Organizations utilizing these products should prioritize patching to versions 5.0.0 and 6.0.0, respectively, to mitigate the risk of unauthorized command execution.
Public Exploit Signal
A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.
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Original NVD Description
linuxfabrik-lib provides Python modules for database access, caching, shell execution, and API integrations, and Linuxfabrik Monitoring Plugins uses those modules to run external monitoring commands. From the earliest affected releases until linuxfabrik-lib 5.0.0 and Linuxfabrik Monitoring Plugins 6.0.0, check plugins embedded user-controlled values in command strings passed to lib.shell.shell_exec(), which split strings at pipe characters and executed the resulting commands. In check-plugins/restic-check/restic-check, the --repo parameter could inject a pipe-delimited command into a constructed restic invocation, and sudo-authorized execution allowed a compromised nagios or icinga account to run that command as root. The shared library also accepted command strings and a shell parameter, while numerous plugins constructed external commands from attacker-influenced arguments. The fixes require argv lists, always use shell=False, remove pipe splitting, and reject option-like positional values through lib.shell.safe_cli_value(). These issues are fixed in linuxfabrik-lib 5.0.0 and Linuxfabrik Monitoring Plugins 6.0.0.