CVE-2024-47491 Information

Description

An Improper Handling of Exceptional Conditions vulnerability in the Routing Protocol Daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows a network-based unauthenticated attacker to cause Denial of Service (DoS).

When a BGP UPDATE with malformed path attribute is received over an established BGP session rpd crashes and restarts.

Continuous receipt of a BGP UPDATE with a specifically malformed path attribute will create a sustained Denial of Service (DoS) condition for impacted devices. While this issue affects systems running 32-bit and 64-bit systems the probability of impact on 64-bit system is extremely low.  According to KB25803 https://supportportal.juniper.net/s/article/Junos-How-to-check-if-Junos-OS-is-64-or-32-bit-on-a-router customers can confirm 32-bit or 64-bit system via the ’ show version detail ’ command:

 lab@router> show version detail| match 32
 JUNOS 32-bit kernel Software Suite 

 lab@router> show version detail| match 64
 JUNOS 64-bit kernel Software Suite 

This issue affects:

Juniper Networks Junos OS: 

All versions before 21.4R3-S8 
from 22.2 before 22.2R3-S4 
from 22.4 before 22.4R3-S3 
from 23.2 before 23.2R2-S1 
from 23.4 before 23.4R1-S2 23.4R2.

Juniper Networks Junos OS Evolved:  All versions before 21.4R3-S8-EVO from 22.2 before 22.2R3-S4-EVO from 22.4 before 22.4R3-S3-EVO from 23.2 before 23.2R2-S1-EVO from 23.4 before 23.4R1-S2-EVO 23.4R2-EVO.

CVSS Vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Reference

https://supportportal.juniper.net/

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

5.9