CVE-2020-9015

Description

Arista DCS-7050QX-32S-R 4.20.9M, DCS-7050CX3-32S-R 4.20.11M, and DCS-7280SRAM-48C6-R 4.22.0.1F devices (and possibly other products) allow attackers to bypass intended TACACS+ shell restrictions via a | character. NOTE: the vendor reports that this is a configuration issue relating to an overly permissive regular expression in the TACACS+ server permitted commands

9.8

CVSS

Severity: Critical

CVSS 3.1 •

CVSS 2.0 •

EPSS 67.48% Top 5%

Third-Party Advisory securitybytes.me

Affected: n/a n/a

References

Link	Tags
https://securitybytes.me	third party advisory
https://securitybytes.me/posts/cve-2020-9015/	broken link
https://eos.arista.com/arista-eos-is-not-vulnerable-to-cve-2020-9015/
http://packetstormsecurity.com/files/158119/Arista-Restricted-Shell-Escape-Privilege-Escalation.html

Frequently Asked Questions

What is the severity of CVE-2020-9015?: CVE-2020-9015 has been scored as a critical severity vulnerability.
How to fix CVE-2020-9015?: To fix CVE-2020-9015, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2020-9015 being actively exploited in the wild?: It is possible that CVE-2020-9015 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~67% probability that this vulnerability will be exploited by malicious actors in the next 30 days.

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