SB2021042215 - Denial of service in Junos OS ARP processing
Published: April 22, 2021 Updated: March 22, 2022
Security Bulletin ID
SB2021042215
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Adjecent network
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Double Free (CVE-ID: CVE-2021-0271)
CWE-ID: CWE-415 - Double Free
CVSSv4: CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to denial of service (DoS) attack.
The vulnerability exists due to a boundary error in the software forwarding interface daemon (sfid) process. A remote attacker on the local network can send a specially crafted ARP packet to the affected device and perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.