CVE-2022-22207

Junos OS: MX Series with MPC11: In a GNF / node slicing scenario gathering AF interface statistics can lead to a kernel crash

Description

A Use After Free vulnerability in the Advanced Forwarding Toolkit (AFT) manager process (aftmand) of Juniper Networks Junos OS allows an unauthenticated networked attacker to cause a kernel crash due to intensive polling of Abstracted Fabric (AF) interface statistics and thereby a Denial of Service (DoS). Continued gathering of AF interface statistics will create a sustained Denial of Service (DoS) condition. This issue affects Juniper Networks Junos OS on MX Series: 20.1 versions later than 20.1R1; 20.2 versions prior to 20.2R3-S5; 20.3 versions prior to 20.3R3-S4; 20.4 versions prior to 20.4R3; 21.1 versions prior to 21.1R2; 21.2 versions prior to 21.2R2.

Remediation

Solution:

  • The following Junos OS software releases have been updated to resolve this specific issue Junos OS: 20.2R3-S5, 20.3R3-S4, 20.4R3, 21.1R2, 21.2R2, 21.3R1, and all subsequent releases.

Workaround:

  • There are no viable workarounds for this issue. To reduce the risk of exploitation of this issue, use access lists or firewall filters to limit access to only trusted networks, hosts and users.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
EPSS 0.25%
Vendor Advisory juniper.net
Affected: Juniper Networks Junos OS
Published at:
Updated at:

References

Link Tags
https://kb.juniper.net/JSA69711 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2022-22207?
CVE-2022-22207 has been scored as a high severity vulnerability.
How to fix CVE-2022-22207?
To fix CVE-2022-22207: The following Junos OS software releases have been updated to resolve this specific issue Junos OS: 20.2R3-S5, 20.3R3-S4, 20.4R3, 21.1R2, 21.2R2, 21.3R1, and all subsequent releases.
Is CVE-2022-22207 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2022-22207 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2022-22207?
CVE-2022-22207 affects Juniper Networks Junos OS.
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