CVE-2022-22183

Junos OS Evolved: A remote attacker may cause a CPU Denial of Service by sending genuine traffic to a device on a specific IPv4 port.

Description

An Improper Access Control vulnerability in Juniper Networks Junos OS Evolved allows a network-based unauthenticated attacker who is able to connect to a specific open IPv4 port, which in affected releases should otherwise be unreachable, to cause the CPU to consume all resources as more traffic is sent to the port to create a Denial of Service (DoS) condition. Continued receipt and processing of these packets will create a sustained Denial of Service (DoS) condition. This issue affects: Juniper Networks Junos OS Evolved 20.4 versions prior to 20.4R3-S2-EVO; 21.1 versions prior to 21.1R3-S1-EVO; 21.2 versions prior to 21.2R3-EVO; 21.3 versions prior to 21.3R2-EVO; 21.4 versions prior to 21.4R2-EVO. This issue does not affect Junos OS.

Remediation

Solution:

  • The following software releases have been updated to resolve this specific issue: 20.4R3-S2-EVO, 21.1R3-S1-EVO, 21.2R3-EVO, 21.3R2-EVO, 21.4R2-EVO, 22.1R1-EVO, and all subsequent releases.

Workaround:

  • There are no available workarounds for this issue. To reduce the risk of exploitation customers may enable loopback firewall filters on the device to drop unnecessary connections and traffic from untrusted networks and devices.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 1.16% Top 25%
Vendor Advisory juniper.net
Affected: Juniper Networks Junos OS Evolved
Affected: Juniper Networks Junos OS
Published at:
Updated at:

References

Link Tags
https://kb.juniper.net/JSA69516 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2022-22183?
CVE-2022-22183 has been scored as a high severity vulnerability.
How to fix CVE-2022-22183?
To fix CVE-2022-22183: The following software releases have been updated to resolve this specific issue: 20.4R3-S2-EVO, 21.1R3-S1-EVO, 21.2R3-EVO, 21.3R2-EVO, 21.4R2-EVO, 22.1R1-EVO, and all subsequent releases.
Is CVE-2022-22183 being actively exploited in the wild?
It is possible that CVE-2022-22183 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2022-22183?
CVE-2022-22183 affects Juniper Networks Junos OS Evolved, Juniper Networks Junos OS.
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