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A configuration issue in certain Arista network devices (DCS-7050QX-32S-R 4.20.9M, DCS-7050CX3-32S-R 4.20.11M, DCS-7280SRAM-48C6-R 4.22.0.1F) allows attackers to bypass intended TACACS+ shell restrictions by leveraging an overly permissive regular expression in the TACACS+ server's permitted commands. Specifically, the use of the '|' character enables privilege escalation or command execution beyond the intended restrictions. The vulnerability is not due to a flaw in Arista's EOS software, but rather improper configuration of the TACACS+ server.
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1 valid exploit after Mallory filtered fakes, detection scripts, and README-only repos.
This repository contains a single Metasploit exploit module targeting Arista network devices affected by CVE-2020-9015. The exploit leverages a misconfigured TACACS+ setup that provides a read-only user with access to a restricted shell (rbash) via SSH. By exploiting this configuration, the module attempts to escape the restricted shell and execute a reverse shell payload, granting the attacker privileged access to the device. The exploit requires valid SSH credentials for a read-only account and network access to the device's SSH service. The payload is a bash reverse shell that connects back to the attacker's specified host and port. The code is written in Ruby and follows the standard Metasploit module structure, with options for SSH credentials, debugging, and timeouts. The repository is operational and provides a working exploit for the described vulnerability.
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