PT-2020-20430 · Arista · Arista Dcs-7280Sram-48C6-R+2

An0@Deadnull · Published 2020-02-20 · Updated 2024-08-04 · CVE-2020-9015

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Arista DCS-7050QX-32S-R version 4.20.9M Arista DCS-7050CX3-32S-R version 4.20.11M Arista DCS-7280SRAM-48C6-R version 4.22.0.1F

Description The issue allows attackers to bypass intended TACACS+ shell restrictions via a | character. This is reportedly a configuration issue relating to an overly permissive regular expression in the TACACS+ server permitted commands.

Recommendations For Arista DCS-7050QX-32S-R version 4.20.9M, consider revising the TACACS+ server configuration to restrict permitted commands and avoid using overly permissive regular expressions. For Arista DCS-7050CX3-32S-R version 4.20.11M, consider revising the TACACS+ server configuration to restrict permitted commands and avoid using overly permissive regular expressions. For Arista DCS-7280SRAM-48C6-R version 4.22.0.1F, consider revising the TACACS+ server configuration to restrict permitted commands and avoid using overly permissive regular expressions.

Exploit

Fix

Related Identifiers

CVE-2020-9015

Affected Products

Arista Dcs-7050Cx3-32S-R

Arista Dcs-7050Qx-32S-R

Arista Dcs-7280Sram-48C6-R

References · 10

• 🔥 https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/unix/ssh/arista_tacplus_shell.rb · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2020-9015 · Security Note
• https://osv.dev/vulnerability/CVE-2020-9015 · Vendor Advisory
• https://t.me/cvenotify/1121 · Telegram Post
• https://eos.arista.com/arista-eos-is-not-vulnerable-to-cve-2020-9015 · Note
• https://t.me/cvenotify/88940 · Telegram Post
• https://securitybytes.me · Note
• https://securitybytes.me/posts/cve-2020-9015 · Note
• http://packetstormsecurity.com/files/158119/Arista-Restricted-Shell-Escape-Privilege-Escalation.html · Note
• https://t.me/cvenotify/76360 · Telegram Post