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CVE-2020-9015

CRITICALCVSS 9.8/10EPSS 16.08%

Last modified

CVE-2020-9015 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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. EPSS estimates a 16.08% chance of exploitation in the next 30 days.

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

Metrics

CVSS 3.1
9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability
16.08%

96.5th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

VendorProductVersions
AristaDcs-7050qx-32s-R Firmware4.20.9m
AristaDcs-7050cx3-32s-R Firmware4.20.11m
AristaDcs-7280sram-48c6-R Firmware4.22.0.1f

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2020-9015?
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
How severe is CVE-2020-9015?
CVE-2020-9015 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 16.08% probability of exploitation in the next 30 days.
How do I fix CVE-2020-9015?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-9015?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST