SB2024041111 - Improper check or handling of exceptional conditions in Juniper Junos OS

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Main Vulnerability Database SB2024041111

SB2024041111 - Improper check or handling of exceptional conditions in Juniper Junos OS

Published: April 11, 2024

Security Bulletin ID SB2024041111
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Adjecent network
Highest impact Denial of service

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Improper check or handling of exceptional conditions (CVE-ID: CVE-2024-21593)

CWE-ID: CWE-703 - Improper Check or Handling of Exceptional Conditions

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 improper check or handling of exceptional conditions error in the Packet Forwarding Engine (PFE). A remote non-authenticated attacker can cause a Denial of Service (DoS).

If an attacker sends a specific MPLS packet, which upon processing, causes an internal loop, that leads to a PFE crash and restart.

Continued receipt of these packets leads to a sustained Denial of Service (DoS) condition.


Remediation

Install update from vendor's website.

References