SB2021022522 - Denial of service in Cisco NX-OS Software Protocol Independent Multicast
Published: February 25, 2021
Security Bulletin ID
SB2021022522
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Adjecent network
Highest impact
Partial DoS
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Input validation error (CVE-ID: CVE-2021-1367)
CWE-ID: CWE-20 - Improper input validation
CVSSv4: CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of user-supplied input in the Protocol Independent Multicast (PIM) feature. A remote attacker on the local network can send a spceially crrafted PIM packet and perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.