CVE-2024-39516

Summary

An Out-of-Bounds Read vulnerability in

the routing protocol daemon (rpd) of

Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated network-based attacker sending a specifically malformed BGP packet to cause rpd to crash and restart, resulting in a Denial of Service (DoS). Continued receipt and processing of this packet will create a sustained Denial of Service (DoS) condition.

This issue only affects systems configured in either of two ways:

    *  systems with BGP traceoptions enabled

    *  systems with BGP traffic engineering
      configured

This issue can affect iBGP and eBGP with

any address family

configured. The specific attribute involved is non-transitive, and will not propagate across a network.

This issue affects:

Junos OS: 

  • All versions before 21.4R3-S8,
  • 22.2 before 22.2R3-S5, 
  • 22.3 before 22.3R3-S4, 
  • 22.4 before 22.4R3-S3, 
  • 23.2 before 23.2R2-S2, 
  • 23.4 before 23.4R2; 

Junos OS Evolved: 

  • All versions before 21.4R3-S8-EVO, 
  • 22.2-EVO before 22.2R3-S5-EVO, 
  • 22.3-EVO before 22.3R3-S4-EVO, 
  • 22.4-EVO before 22.4R3-S3-EVO, 
  • 23.2-EVO before 23.2R2-S2-EVO, 
  • 23.4-EVO before 23.4R2-EVO.

Affected Software

VendorProductVersion RangeStatus
Juniper NetworksJunos OS0 < 21.4R3-S8affected
Juniper NetworksJunos OS22.2 < 22.2R3-S5affected
Juniper NetworksJunos OS22.3 < 22.3R3-S4affected
Juniper NetworksJunos OS22.4 < 22.4R3-S3affected
Juniper NetworksJunos OS23.2 < 23.2R2-S2affected
Juniper NetworksJunos OS23.4 < 23.4R2affected
Juniper NetworksJunos OS Evolved0 < 21.4R3-S8-EVOaffected
Juniper NetworksJunos OS Evolved22.2-EVO < 22.2R3-S5-EVOaffected
Juniper NetworksJunos OS Evolved22.3-EVO < 22.3R3-S4-EVOaffected
Juniper NetworksJunos OS Evolved22.4-EVO < 22.4R3-S3-EVOaffected
Juniper NetworksJunos OS Evolved23.2-EVO < 23.2R2-S2-EVOaffected
Juniper NetworksJunos OS Evolved23.4-EVO < 23.4R2-EVOaffected

Weaknesses

  • CWE-125: CWE-125 Out-of-bounds Read

Workarounds

If BGP traceoptions are enabled, and traffic engineering is not configured, disable BGP traceoptions if they are not being used for active troubleshooting.

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: yes
    • Technical Impact: partial

References