Double Free in Junos OS - CVE-2021-0271
Published: March 22, 2022
Vulnerability identifier: #VU61514
CSH Severity: Medium
CVSS v4: 7.1 [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]
CVE-ID: CVE-2021-0271
CWE-ID: CWE-415
Exploitation vector: Adjecent network
Exploit availability:
No public exploit available
Vulnerability details
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.
Affected software
Junos OS
How to mitigate CVE-2021-0271
Install updates from vendor's website.
The vulnerability affects Juniper Networks Junos OS on EX2200-C Series, EX3200 Series, EX3300 Series, EX4200 Series, EX4500 Series, EX4550 Series, EX6210 Series, EX8208 Series, EX8216 Series.
Junos OS - addressed in versions 12.3R12-S17, 15.1R7-S8