An Improper Validation of Specified Index, Position, or Offset in Input vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS allows an unauthenticated network-based attacker to cause a Denial of Service (DoS).

On SRX5000 Series with SPC3, SRX4000 Series, and vSRX, when PowerMode IPsec is configured and a malformed ESP packet matching an established IPsec tunnel is received the PFE crashes.

This issue affects Juniper Networks Junos OS on SRX5000 Series with SPC3, SRX4000 Series, and vSRX:

• All versions prior to 19.4R2-S6, 19.4R3-S7;
• 20.1 versions prior to 20.1R3-S3;
• 20.2 versions prior to 20.2R3-S4;
• 20.3 versions prior to 20.3R3-S3;
• 20.4 versions prior to 20.4R3-S2;
• 21.1 versions prior to 21.1R3;
• 21.2 versions prior to 21.2R3;
• 21.3 versions prior to 21.3R1-S2, 21.3R2.

A device will only be affected by this vulnerability if the following statement is configured:

Juniper SIRT is not aware of any malicious exploitation of this vulnerability.

This issue was seen during production usage.

This issue has been assigned CVE-2022-22201.

The following software releases have been updated to resolve this specific issue: 19.4R2-S6, 19.4R3-S7, 20.1R3-S3, 20.2R3-S4, 20.3R3-S3, 20.4R3-S2, 21.1R3, 21.2R3, 21.3R1-S2, 21.3R2, 21.4R1, and all subsequent releases.

This issue is being tracked as PR 1629407 which is visible on the Customer Support website.

Note: Juniper SIRT's policy  is not to evaluate releases which are beyond End of Engineering (EOE) or End of Life (EOL).

IMPLEMENTATION:

Software Releases, patches and updates are available at https://support.juniper.net/support/downloads/.

• KB16613: Overview of the Juniper Networks SIRT Quarterly Security Bulletin Publication Process [juniper.net]
• KB16765: In which releases are vulnerabilities fixed? [juniper.net]
• KB16446: Common Vulnerability Scoring System (CVSS) and Juniper's Security Advisories [juniper.net]
• Report a Security Vulnerability - How to Contact the Juniper Networks Security Incident Response Team
• CVE-2022-22201 at cve.mitre.org