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CVE-2019-10669

Status Candidate

Overview

An issue was discovered in LibreNMS through 1.47. There is a command injection vulnerability in html/includes/graphs/device/collectd.inc.php where user supplied parameters are filtered with the mysqli_escape_real_string function. This function is not the appropriate function to sanitize command arguments as it does not escape a number of command line syntax characters such as ` (backtick), allowing an attacker to inject commands into the variable $rrd_cmd, which gets executed via passthru().

Related Files

LibreNMS Collectd Command Injection
Posted Sep 6, 2019
Authored by Eldar Marcussen, Shelby Pace | Site metasploit.com

This Metasploit module exploits a command injection vulnerability in the Collectd graphing functionality in LibreNMS. The to and from parameters used to define the range for a graph are sanitized using the mysqli_escape_real_string() function, which permits backticks. These parameters are used as part of a shell command that gets executed via the passthru() function, which can result in code execution.

tags | exploit, shell, code execution
advisories | CVE-2019-10669
SHA-256 | e40f291b536ddb530c9c679f17c98644fcd1bd9ef0a75a355c8b3a8fc1d135c0
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