What is CVE-2021-0217?

CVE-2021-0217 is a high-severity vulnerability in Juniper Ex2300, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 7.4/10. Published 2021-01-15.

How severe is CVE-2021-0217?

High severity. CVSS v3 base score is 7.4 out of 10.

Buffer overflow in Juniper Ex2300

CVE-2021-0217

A vulnerability in processing of certain DHCP packets from adjacent clients on EX Series and QFX Series switches running Juniper Networks Junos OS with DHCP local/relay server configured may lead to exhaustion of DMA memory causing a Denia…

Vulnerability class: Buffer Overflow

EPSS: 0.007 (49.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.4 (High). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H.

Affected products

Juniper Ex2300
Juniper Ex2300-c
Juniper Ex2300m
Juniper Ex3400
Juniper Ex4300
Juniper Ex4300m
Juniper Ex4600
Juniper Ex4650
Juniper Ex9200
Juniper Ex9250

Weakness classification (CWE)

CWE-119 — Improper Restriction of Operations within the Bounds of a Memory Buffer
CWE-770 — Allocation of Resources Without Limits or Throttling

References

sirt@juniper.net (x_refsource_CONFIRM, Exploit, Vendor Advisory)

Frequently asked questions

What is CVE-2021-0217?: CVE-2021-0217 is a high-severity vulnerability in Juniper Ex2300, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 7.4/10. Published 2021-01-15.
How severe is CVE-2021-0217?: High severity. CVSS v3 base score is 7.4 out of 10.