SB2020100729 - MitM attack in Arista EOS
Published: October 7, 2020 Updated: May 17, 2025
Security Bulletin ID
SB2020100729
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Adjecent network
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Input validation error (CVE-ID: CVE-2020-17355)
CWE-ID: CWE-20 - Improper input validation
CVSSv4: CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to perform a denial of service or MitM attack.
The vulnerability exists due to insufficient validation of DHCPv6 packets. A remote attacker can send specially crafted DHCPv6 packet to the system and force it to install an incorrect route. This can result in a denial of service conditions or a MitM attack.
Remediation
Install update from vendor's website.