SB2022071365 - Incorrect comparison in Juniper Junos OS

Security Bulletin ID SB2022071365

CSH 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 vulnerability.

1) Incorrect comparison (CVE-ID: CVE-2022-22203)

CWE-ID: CWE-697 - Incorrect Comparison

CVSSv4: CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green

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

The vulnerability exists due to incorrect comparison error in PFE. A remote non-authenticated attacker can cause a Denial of Service (DoS).

On QFX5000 Series, and EX4600 and EX4650 platforms, the fxpc process will crash followed by the FPC reboot upon receipt of a specific hostbound packet.

Continued receipt of these specific packets will create a sustained Denial of Service (DoS) condition.

Remediation

Install update from vendor's website.

References

https://supportportal.juniper.net/s/article/2022-07-Security-Bulletin-Junos-OS-EX4600-Series-and-QFX5000-Series-Receipt-of-specific-traffic-will-lead-to-an-fxpc-process-crash-followed-by-an-FPC-reboot-CVE-2022-22203