High severity · published Oct 21, 2020
CVE-2020-17355
Arista EOS before 4.21.12M, 4.22.x before 4.22.7M, 4.23.x before 4.23.5M, and 4.24.x before 4.24.2F allows remote attackers to cause a denial of service (restart of agents) by…
7.5
CVSS
1.2%
EPSS
No
On KEV
Description
Arista EOS before 4.21.12M, 4.22.x before 4.22.7M, 4.23.x before 4.23.5M, and 4.24.x before 4.24.2F allows remote attackers to cause a denial of service (restart of agents) by crafting a malformed DHCP packet which leads to an incorrect route being installed.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.2% · higher than 68% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
EO
Eos · Arista
4.21.0 before 4.21.12m; 4.22 before 4.22.7m; 4.23 before 4.23.5m; 4.24.0 before 4.24.2f · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-17355
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-17355
Vendor Advisory
https://www.arista.com/en/support/advisories-notices/security-advisories/11759-security-advisory-53
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