Main Vulnerability Database Vulnerabilities #VU68370

Input validation error in Junos OS and Junos OS Evolved - CVE-2022-22199

Published: October 17, 2022

Vulnerability identifier: #VU68370

CSH Severity: Medium

CVSS v4: 8.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2022-22199

CWE-ID: CWE-20

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input when processing EVPN routes. A remote attacker in direct control of a BGP client connected to a route reflector, or via a machine in the middle (MITM) attack, can send a specific EVPN route contained within a BGP Update, triggering a routing protocol daemon (RPD) crash.

Affected software

Junos OS
Junos OS Evolved

How to mitigate CVE-2022-22199

Install updates from vendor's website.

Junos OS - addressed in versions 21.3R3-S2, 21.4R2-S2, 21.4R3, 22.1R1-S2, 22.1R3, 22.2R2, 22.3R1
Junos OS Evolved - addressed in versions 21.4R3-EVO, 22.1R1-S2-EVO, 22.1R3-EVO, 22.2R2-EVO, 22.3R1-EVO

External References

https://supportportal.juniper.net/s/article/2022-10-Security-Bulletin-Junos-OS-and-Junos-OS-Evolved-RPD-core-upon-receipt-of-a-specific-EVPN-route-by-a-BGP-route-reflector-in-an-EVPN-environment-CVE-2022-22199

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