What is CVE-2021-28510?

CVE-2021-28510 is a medium-severity vulnerability in Arista 7020r, classified under Uncontrolled Resource Consumption. CVSS score: 5.3/10. Published 2023-01-26.

How severe is CVE-2021-28510?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Resource exhaustion in Arista 7020r

CVE-2021-28510

For certain systems running EOS, a Precision Time Protocol (PTP) packet of a management/signaling message with an invalid Type-Length-Value (TLV) causes the PTP agent to restart. Repeated restarts of the service will make the service unava…

Vulnerability class: DoS (Denial of Service)

EPSS: 0.010 (59.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.

Affected products

Arista 7020r
Arista 7050cx3-32s
Arista 7050cx3m-32s
Arista 7050qx2-32s
Arista 7050qx-32s
Arista 7050sx-128
Arista 7050sx2-128
Arista 7050sx2-72q
Arista 7050sx3-48c8
Arista 7050sx3-48yc

Weakness classification (CWE)

CWE-400 — Uncontrolled Resource Consumption
CWE-1284 — Improper Validation of Specified Quantity in Input

References

psirt@arista.com (Exploit, Mitigation, Vendor Advisory)

Frequently asked questions

What is CVE-2021-28510?: CVE-2021-28510 is a medium-severity vulnerability in Arista 7020r, classified under Uncontrolled Resource Consumption. CVSS score: 5.3/10. Published 2023-01-26.
How severe is CVE-2021-28510?: Medium severity. CVSS v3 base score is 5.3 out of 10.