SB2023011175 - Improper validation of array index in Junos OS Evolved and Juniper Junos OS

Security Bulletin ID SB2023011175

Severity

Medium

Patch available

YES

Number of vulnerabilities 1

Exploitation vector Remote access

Highest impact Denial of service

Breakdown by Severity

Low
Medium
High
Critical

Description

This security bulletin contains information about 1 security vulnerability.

1) Improper validation of array index (CVE-ID: CVE-2023-22401)

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

The vulnerability exists due to improper validation of array index error in the Advanced Forwarding Toolkit Manager daemon (aftmand). A remote non-authenticated attacker can cause a Denial of Service (DoS).

On the PTX10008 and PTX10016 platforms running Junos OS or Junos OS Evolved, when a specific SNMP MIB is queried this will cause a PFE crash and the FPC will go offline and not automatically recover.

A system restart is required to get the affected FPC in an operational state again.

Remediation

Install update from vendor's website.

References

https://supportportal.juniper.net/s/article/2023-01-Security-Bulletin-Junos-OS-and-Junos-OS-Evolved-PTX10008-PTX10016-When-a-specific-SNMP-MIB-is-queried-the-FPC-will-crash-CVE-2023-22401