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Most Cacti Installations Unpatched Towards Exploited Vulnerability

By Ionut Arghire on January 13, 2023

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Most internet-exposed Cacti installations haven’t been patched in opposition to a critical-severity command injection vulnerability that’s being exploited in assaults.

An open-source web-based community monitoring and graphing instrument that provides an operational monitoring and fault administration framework, Cacti is a front-end utility for the info logging utility RRDtool.

In early December 2022, the instrument’s maintainers introduced patches for CVE-2022-46169, a critical-severity (CVSS rating 9.8) command injection flaw that might permit unauthenticated attackers to execute code on the server working Cacti, if a selected information supply was used.

The safety defect consists of an authentication bypass, the place an unauthenticated attacker can entry a selected file, and an improper sanitization of an argument through the processing of a selected HTTP question for a polling ‘motion’ outlined within the database.

Customers can outline actions for the monitoring of hosts (pollers) and the difficulty impacts a poller kind that executes a script. An attacker in a position to bypass authentication can provide the particular argument that’s handed alongside to the execution name unsanitized, attaining command injection.

Cacti variations 1.2.23 and 1.3.0, launched on December 5, embody patches for this vulnerability.

A couple of days after SonarSource revealed a technical evaluation of CVE-2022-46169 on January 3, The Shadowserver Basis warned that it had logged the primary exploitation makes an attempt focusing on the safety defect.

“Utilizing Cacti? We began to choose up exploitation makes an attempt for Cacti unauthenticated distant command injection CVE-2022-46169 together with subsequent malware obtain. These began Jan third. Ensure that to patch & not expose your Cacti occasion to the Web,” Shadowserver stated.

This week, assault floor administration agency Censys revealed that, out of 6,400 internet-accessible Cacti hosts that it has recognized, solely 26 had been working a patched model of the instrument. Most of those servers are in Brazil, with Indonesia and the US rounding up the highest three.

With exploitation of this vulnerability underway, organizations are suggested to replace Cacti to a patched model as quickly as attainable.

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