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CVE-2024-39534

Junos OS Evolved: Connections to the network and broadcast address accepted

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 21.4R3-S8-EVO, 22.2R3-S4-EVO, 22.3R3-S4-EVO, 22.4R3-S3-EVO, 23.2R2-S1-EVO
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: none
  • Automatable: no
  • Technical impact: partial

Summary

An Incorrect Comparison vulnerability in the local address verification API of Juniper Networks Junos OS Evolved allows an unauthenticated network-adjacent attacker to create sessions or send traffic to the device using the network and broadcast address of the subnet assigned to an interface. This is unintended and unexpected behavior and can allow an attacker to bypass certain compensating controls, such as stateless firewall filters. This issue affects Junos OS Evolved:  • All versions before 21.4R3-S8-EVO,  • 22.2-EVO before 22.2R3-S4-EVO,  • 22.3-EVO before 22.3R3-S4-EVO,  • 22.4-EVO before 22.4R3-S3-EVO,  • 23.2-EVO before 23.2R2-S1-EVO,  • 23.4-EVO before 23.4R1-S2-EVO, 23.4R2-EVO.

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: none · Automatable: no · Technical impact: partial

  3. Record last updated

Affected versions

  • Juniper Networks Junos OS Evolved

    fixed in 21.4R3-S8-EVO; From 22.2-EVO · fixed in 22.2R3-S4-EVO; From 22.3-EVO · fixed in 22.3R3-S4-EVO; From 22.4-EVO · fixed in 22.4R3-S3-EVO; From 23.2-EVO · fixed in 23.2R2-S1-EVO

References 1

supportportal.juniper.net