CVE-2025-30652

Summary

An Improper Handling of Exceptional Conditions vulnerability in routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows a local, low-privileged attacker executing a CLI command to cause a Denial of Service (DoS).

When asregex-optimized is configured and a specific "show route as-path" CLI command is executed, the rpd crashes and restarts. Repeated execution of this command will cause a sustained DoS condition. This issue affects Junos OS:

  • All versions before 21.2R3-S9,
  • from 21.4 before 21.4R3-S10,
  • from 22.2 before 22.2R3-S6,
  • from 22.4 before 22.4R3-S6,
  • from 23.2 before 23.2R2-S3,
  • from 23.4 before 23.4R2-S4,
  • from 24.2 before 24.2R2.

and Junos OS Evolved:

  • All versions before 21.2R3-S9-EVO,
  • from 21.4-EVO before 21.4R3-S10-EVO,
  • from 22.2-EVO before 22.2R3-S6-EVO,
  • from 22.4-EVO before 22.4R3-S6-EVO,
  • from 23.2-EVO before 23.2R2-S3-EVO,
  • from 23.4-EVO before 23.4R2-S4-EVO,
  • from 24.2-EVO before 24.2R2-EVO.

Affected Software

VendorProductVersion RangeStatus
Juniper NetworksJunos OS0 < 21.2R3-S9affected
Juniper NetworksJunos OS21.4 < 21.4R3-S10affected
Juniper NetworksJunos OS22.2 < 22.2R3-S6affected
Juniper NetworksJunos OS22.4 < 22.4R3-S6affected
Juniper NetworksJunos OS23.2 < 23.2R2-S3affected
Juniper NetworksJunos OS23.4 < 23.4R2-S4affected
Juniper NetworksJunos OS24.2 < 24.2R2affected
Juniper NetworksJunos OS Evolved0 < 21.2R3-S9-EVOaffected
Juniper NetworksJunos OS Evolved21.4-EVO < 21.4R3-S10-EVOaffected
Juniper NetworksJunos OS Evolved22.2-EVO < 22.2R3-S6-EVOaffected
Juniper NetworksJunos OS Evolved22.4-EVO < 22.4R3-S6-EVOaffected
Juniper NetworksJunos OS Evolved23.2-EVO < 23.2R2-S3-EVOaffected
Juniper NetworksJunos OS Evolved23.4-EVO < 23.4R2-S4-EVOaffected
Juniper NetworksJunos OS Evolved24.2-EVO < 24.2R2-EVOaffected

Weaknesses

  • CWE-755: CWE-755 Improper Handling of Exceptional Conditions

Workarounds

Use access lists or firewall filters to limit access to the CLI only from trusted hosts and administrators.

Utilize CLI authorization to disallow execution of the 'show route as-path' command.

ADP Enrichment

CISA ADP Vulnrichment

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

References