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CVE-2020-11622

HIGHCVSS 7.5/10EPSS 1.28%

Last modified

CVE-2020-11622 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. A vulnerability exists in Arista’s Cloud EOS VM / vEOS 4.23.2M and below releases in the 4.23.x train, 4.22.4M and below releases in the 4.22.x train, 4.21.3M to 4.21.9M releases in the 4.21.x train, 4.21.3FX-7368.*, 4.21.4-FCRFX.*, 4.21.4.1, 4.21.7.1, 4.22.2.0.1, 4.22.2.2.1, 4.22.3.1, and 4.23.2.1 Router code in a scenario where TCP MSS options are configured.. EPSS estimates a 1.28% chance of exploitation in the next 30 days.

Description

A vulnerability exists in Arista’s Cloud EOS VM / vEOS 4.23.2M and below releases in the 4.23.x train, 4.22.4M and below releases in the 4.22.x train, 4.21.3M to 4.21.9M releases in the 4.21.x train, 4.21.3FX-7368.*, 4.21.4-FCRFX.*, 4.21.4.1, 4.21.7.1, 4.22.2.0.1, 4.22.2.2.1, 4.22.3.1, and 4.23.2.1 Router code in a scenario where TCP MSS options are configured.

Metrics

CVSS 3.1
7.5/10

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

EPSS Probability
1.28%

66.3th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

VendorProductVersions
AristaCloudeos>= 4.21.3m, <= 4.21.9m
AristaCloudeos>= 4.22.0, <= 4.22.4m
AristaCloudeos>= 4.23.0, <= 4.23.2m
AristaCloudeos4.21.3fx-7368
AristaCloudeos4.21.4-fcrfx
AristaCloudeos4.21.4.1
AristaCloudeos4.21.7.1
AristaCloudeos4.22.2.0.1
AristaCloudeos4.22.2.2.1
AristaCloudeos4.22.3.1
AristaCloudeos4.23.2.1
AristaVeos>= 4.21.3m, <= 4.21.9m
AristaVeos>= 4.22.0, <= 4.22.4m
AristaVeos>= 4.23.0, <= 4.23.2m
AristaVeos4.21.3fx-7368
AristaVeos4.21.4-fcrfx
AristaVeos4.21.4.1
AristaVeos4.21.7.1
AristaVeos4.22.2.0.1
AristaVeos4.22.2.2.1
AristaVeos4.22.3.1
AristaVeos4.23.2.1

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2020-11622?
A vulnerability exists in Arista’s Cloud EOS VM / vEOS 4.23.2M and below releases in the 4.23.x train, 4.22.4M and below releases in the 4.22.x train, 4.21.3M to 4.21.9M releases in the 4.21.x train, 4.21.3FX-7368.*, 4.21.4-FCRFX.*, 4.21.4.1, 4.21.7.1, 4.22.2.0.1, 4.22.2.2.1, 4.22.3.1, and 4.23.2.1 Router code in a scenario where TCP MSS options are configured.
How severe is CVE-2020-11622?
CVE-2020-11622 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.28% probability of exploitation in the next 30 days.
How do I fix CVE-2020-11622?
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-2020-11622?

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

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Source: NVD / NIST