CVE-2024-39531

Summary

An Improper Handling of Values vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS Evolved on ACX 7000 Series allows a network-based, unauthenticated attacker to cause a Denial-of-Service (DoS).

If a value is configured for DDoS bandwidth or burst parameters for any protocol in a queue, all protocols which share the same queue will have their bandwidth or burst value changed to the new value. If, for example, OSPF was configured with a certain bandwidth value, ISIS would also be limited to this value. So inadvertently either the control plane is open for a high level of specific traffic which was supposed to be limited to a lower value, or the limit for a certain protocol is so low that chances to succeed with a volumetric DoS attack are significantly increased. 

This issue affects Junos OS Evolved on ACX 7000 Series:

  • All versions before 21.4R3-S7-EVO,
  • 22.1 versions before 22.1R3-S6-EVO, 
  • 22.2 versions before 22.2R3-S3-EVO,
  • 22.3 versions before 22.3R3-S3-EVO, 
  • 22.4 versions before 22.4R3-S2-EVO,
  • 23.2 versions before 23.2R2-EVO,
  • 23.4

versions

before 23.4R1-S1-EVO, 23.4R2-EVO.

Affected Software

VendorProductVersion RangeStatus
Juniper NetworksJunos OS Evolved0 < 21.4R3-S7-EVOaffected
Juniper NetworksJunos OS Evolved22.1 < 22.1R3-S6-EVOaffected
Juniper NetworksJunos OS Evolved22.2 < 22.2R3-S3-EVOaffected
Juniper NetworksJunos OS Evolved22.3 < 22.3R3-S3-EVOaffected
Juniper NetworksJunos OS Evolved22.4 < 22.4R3-S2-EVOaffected
Juniper NetworksJunos OS Evolved23.2 < 23.2R2-EVOaffected
Juniper NetworksJunos OS Evolved23.4 < 23.4R1-S1-EVO, 23.4R2-EVOaffected

Weaknesses

  • CWE-229: CWE-229: Improper Handling of Values

Workarounds

There are no known workarounds for this issue.

ADP Enrichment

CISA ADP Vulnrichment

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

CVE Program Container

Additional References

References