CVE-2022-22212

Junos OS Evolved: A high rate of specific hostbound traffic will cause unexpected hostbound traffic delays or drops

HIGH
7.5
CVSS Score
Published: July 20, 2022 at 02:15 PM UTC
Updated: June 17, 2026 at 04:28 AM UTC
2 products affected across 2 vendorsJunos OS EvolvedJunos OS Evolved

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Severity
HIGH7.5
Exploit prediction
EPSS 0.8%

Description

An Allocation of Resources Without Limits or Throttling vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS Evolved allows unauthenticated network based attacker to cause a Denial of Service (DoS). On all Junos Evolved platforms hostbound protocols will be impacted by a high rate of specific hostbound traffic from ports on a PFE. Continued receipt of this amount of traffic will create a sustained Denial of Service (DoS) condition. This issue affects Juniper Networks Junos OS Evolved: 21.2 versions prior to 21.2R3-EVO; 21.3 versions prior to 21.3R2-EVO. This issue does not affect Juniper Networks Junos OS Evolved versions prior to 21.2R1.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

21.2 ≤ v < 21.2R3-EVO21.3 ≤ v < 21.3R2-EVO21.221.3
Vendor states this is fixed in 21.2R1-EVO (unaffected)
Affected range stops below 21.2R3-EVO, so it looks safe — our inference, not a vendor statement
Affected range stops below 21.3R2-EVO, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (1)

x_refsource_CONFIRMVendor Advisory
https://kb.juniper.net/JSA69716

CVSS

7.5HIGHjuniper
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-770

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