CVE-2024-39513

Summary

An Improper Input Validation vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS Evolved allows a local, low-privileged attacker to cause a Denial of Service (DoS).

When a specific "clear" command is run, the Advanced Forwarding Toolkit manager (evo-aftmand-bt or evo-aftmand-zx) crashes and restarts.

The crash impacts all traffic going through the FPCs, causing a DoS. Running the command repeatedly leads to a sustained DoS condition. This issue affects Junos OS Evolved: 

  • All versions before 20.4R3-S9-EVO, 
  • from 21.2-EVO before 21.2R3-S7-EVO, 
  • from 21.3-EVO before 21.3R3-S5-EVO, 
  • from 21.4-EVO before 21.4R3-S6-EVO, 
  • from 22.1-EVO before 22.1R3-S4-EVO, 
  • from 22.2-EVO before 22.2R3-S3-EVO, 
  • from 22.3-EVO before 22.3R3-S3-EVO, 
  • from 22.4-EVO before 22.4R3-EVO,
  • from 23.2-EVO before 23.2R2-EVO.

Affected Software

VendorProductVersion RangeStatus
Juniper NetworksJunos OS Evolved0 < 20.4R3-S9-EVOaffected
Juniper NetworksJunos OS Evolved21.2-EVO < 21.2R3-S7-EVOaffected
Juniper NetworksJunos OS Evolved21.3-EVO < 21.3R3-S5-EVOaffected
Juniper NetworksJunos OS Evolved21.4-EVO < 21.4R3-S6-EVOaffected
Juniper NetworksJunos OS Evolved22.1-EVO < 22.1R3-S4-EVOaffected
Juniper NetworksJunos OS Evolved22.2-EVO < 22.2R3-S3-EVOaffected
Juniper NetworksJunos OS Evolved22.3-EVO < 22.3R3-S3-EVOaffected
Juniper NetworksJunos OS Evolved22.4-EVO < 22.4R3-EVOaffected
Juniper NetworksJunos OS Evolved23.2-EVO < 23.2R2-EVOaffected

Weaknesses

  • CWE-20: CWE-20 Improper Input Validation

Workarounds

There are no known workarounds for this issue.

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

CVE Program Container

Additional References

References