CVE-2021-28506
CRITICALCVSS 9.1/10EPSS 1.42%
Last modified
CVE-2021-28506 is a critical-severity vulnerability rated 9.1/10 on the CVSS scale. An issue has recently been discovered in Arista EOS where certain gNOI APIs incorrectly skip authorization and authentication which could potentially allow a factory reset of the device.. EPSS estimates a 1.42% chance of exploitation in the next 30 days.
Description
An issue has recently been discovered in Arista EOS where certain gNOI APIs incorrectly skip authorization and authentication which could potentially allow a factory reset of the device.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Arista | Eos | >= 4.24.0, <= 4.24.7m |
| Arista | Eos | >= 4.25.0, <= 4.25.3 |
| Arista | Eos | >= 4.25.4, <= 4.25.4m |
| Arista | Eos | >= 4.25.5, <= 4.25.5.1m |
| Arista | Eos | >= 4.26.0, <= 4.26.2f |
References
- https://www.arista.com/en/support/advisories-notices/security-advisories/13449-security-advisory-0071Exploit, Mitigation, Patch, Vendor Advisory
- https://www.arista.com/en/support/advisories-notices/security-advisories/13449-security-advisory-0071Exploit, Mitigation, Patch, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-28506?
An issue has recently been discovered in Arista EOS where certain gNOI APIs incorrectly skip authorization and authentication which could potentially allow a factory reset of the device.
How severe is CVE-2021-28506?
CVE-2021-28506 has a CVSS score of 9.1/10 (CRITICAL severity). The EPSS model estimates a 1.42% probability of exploitation in the next 30 days.
How do I fix CVE-2021-28506?
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-2021-28506?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST