Vulnerability Details CVE-2021-0271
A Double Free vulnerability in the software forwarding interface daemon (sfid) process of Juniper Networks Junos OS allows an adjacently-connected attacker to cause a Denial of Service (DoS) by sending a crafted ARP packet to the device. Continued receipt and processing of the crafted ARP packets will create a sustained Denial of Service (DoS) condition. This issue 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. 12.3 versions prior to 12.3R12-S17; 15.1 versions prior to 15.1R7-S8. This issue only affects the listed Marvell-chipset based EX Series devices. No other products or platforms are affected.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 24.9%
CVSS Severity
CVSS v3 Score 6.5
CVSS v2 Score 3.3
Products affected by CVE-2021-0271
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cpe:2.3:h:juniper:ex2200-c:-
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cpe:2.3:h:juniper:ex3200:-
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cpe:2.3:h:juniper:ex3300:-
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cpe:2.3:h:juniper:ex4200:-
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cpe:2.3:h:juniper:ex4500:-
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cpe:2.3:h:juniper:ex4550:-
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cpe:2.3:h:juniper:ex6210:-
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cpe:2.3:h:juniper:ex8208:-
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cpe:2.3:h:juniper:ex8216:-
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cpe:2.3:o:juniper:junos:12.3
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cpe:2.3:o:juniper:junos:15.1