SB2022101265 - Denial of service in Junos OS IPv4 and IPv6 packets handling

Security Bulletin ID SB2022101265

Severity

Medium

Patch available

YES

Number of vulnerabilities 1

Exploitation vector Adjecent network

Highest impact Denial of service

Breakdown by Severity

Low
Medium
High
Critical

Description

This security bulletin contains information about 1 security vulnerability.

1) Input validation error (CVE-ID: CVE-2022-22223)

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

The vulnerability exists due to insufficient validation of IPv4 and IPv6 packets. A remote attacker can send specially crafted IP packets to the affected device, causing multiple interfaces in the LAG to detach and perform a denial of service (DoS) attack.

Successful exploitation of the vulnerability requires that QFX10000 Series devices using Juniper Networks Junos OS are configured as transit IP/MPLS penultimate hop popping (PHP) nodes with link aggregation group (LAG) interfaces.

Remediation

Install update from vendor's website.

References

https://supportportal.juniper.net/s/article/2022-10-Security-Bulletin-Junos-OS-QFX10000-Series-In-IP-MPLS-PHP-node-scenarios-upon-receipt-of-certain-crafted-packets-multiple-interfaces-in-LAG-configurations-may-detach-CVE-2022-22223