An Improper Validation of Specified Type of Input vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS allows an attacker to cause an RPD memory leak leading to a Denial of Service (DoS). This memory leak only occurs when the attacker's packets are destined to any configured IPv6 address on the device.

This issue affects:

Juniper Networks Junos OS

• 21.1 versions prior to 21.1R3-S2;
• 21.2 versions prior to 21.2R3-S1;
• 21.3 versions prior to 21.3R3;
• 21.4 versions prior to 21.4R2;
• 22.1 versions prior to 22.1R2.

This issue does not affect Juniper Networks Junos OS versions prior to 21.1R1.

The configuration required to hit the issue or be potentially exploited is as follows:

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-2022-22228.

The following software releases have been updated to resolve this specific issue:

Junos OS: 21.1R3-S2, 21.2R3-S1, 21.3R3, 21.4R2, 22.1R2, 22.2R1, and all subsequent releases.

This issue is being tracked as 1657333 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-2022-22228 at cve.mitre.org