CVE-2024-21586

Summary

An Improper Check for Unusual or Exceptional Conditions vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS on SRX Series and NFX Series allows an unauthenticated, network-based attacker to cause a Denial-of-Service (DoS).

If an affected device receives specific valid traffic destined to the device, it will cause the PFE to crash and restart. Continued receipt and processing of this traffic will create a sustained DoS condition.

This issue affects Junos OS on SRX Series:

  • 21.4 versions before 21.4R3-S7.9,
  • 22.1 versions before 22.1R3-S5.3,
  • 22.2 versions before 22.2R3-S4.11,
  • 22.3 versions before 22.3R3,
  • 22.4 versions before 22.4R3.

This issue affects Junos OS on NFX Series:

  • 21.4 versions before 21.4R3-S8,
  • 22.1 versions after 22.1R1,
  • 22.2 versions before 22.2R3-S5,
  • 22.3 versions before 22.3R3,
  • 22.4 versions before 22.4R3.

Junos OS versions prior to 21.4R1 are not affected by this issue.

Affected Software

VendorProductVersion RangeStatus
Juniper NetworksJunos OS0 < 21.4R1unaffected
Juniper NetworksJunos OS21.4 < 21.4R3-S7.9affected
Juniper NetworksJunos OS22.1 < 22.1R3-S5.3affected
Juniper NetworksJunos OS22.2 < 22.2R3-S4.11affected
Juniper NetworksJunos OS22.3 < 22.3R3affected
Juniper NetworksJunos OS22.4 < 22.4R3affected
Juniper NetworksJunos OS0 < 21.4R1unaffected
Juniper NetworksJunos OS21.4 < 21.4R3-S8affected
Juniper NetworksJunos OS22.1affected
Juniper NetworksJunos OS22.2 < 22.2R3-S5affected
Juniper NetworksJunos OS22.3 < 22.3R3affected
Juniper NetworksJunos OS22.4 < 22.4R3affected

Weaknesses

  • CWE-754: CWE-754 Improper Check for Unusual or Exceptional Conditions

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