CVE-2023-44203

Summary

An Improper Check or Handling of Exceptional Conditions vulnerability in the Packet Forwarding Engine (pfe) of Juniper Networks Junos OS on QFX5000 Series, EX2300, EX3400, EX4100, EX4400 and EX4600 allows a adjacent attacker to send specific traffic, which leads to packet flooding, resulting in a Denial of Service (DoS).

When a specific IGMP packet is received in an isolated VLAN, it is duplicated to all other ports under the primary VLAN, which causes a flood.

This issue affects QFX5000 series, EX2300, EX3400, EX4100, EX4400 and EX4600 platforms only.

This issue affects Juniper Junos OS on on QFX5000 Series, EX2300, EX3400, EX4100, EX4400 and EX4600:

  • All versions prior to 20.4R3-S5;
  • 21.1 versions prior to 21.1R3-S4;
  • 21.2 versions prior to 21.2R3-S3;
  • 21.3 versions prior to 21.3R3-S5;
  • 21.4 versions prior to 21.4R3-S2;
  • 22.1 versions prior to 22.1R3;
  • 22.2 versions prior to 22.2R3;
  • 22.3 versions prior to 22.3R2.

Affected Software

VendorProductVersion RangeStatus
Juniper NetworksJunos OS0 < 20.4R3-S5affected
Juniper NetworksJunos OS21.1 < 21.1R3-S4affected
Juniper NetworksJunos OS21.2 < 21.2R3-S3affected
Juniper NetworksJunos OS21.3 < 21.3R3-S5affected
Juniper NetworksJunos OS21.4 < 21.4R3-S2affected
Juniper NetworksJunos OS22.1 < 22.1R3affected
Juniper NetworksJunos OS22.2 < 22.2R3affected
Juniper NetworksJunos OS22.3 < 22.3R2affected

Weaknesses

  • CWE-703: CWE-703: Improper Check or Handling of Exceptional Conditions
  • Denial of Service (DoS)

Workarounds

There are no known workarounds for this issue.

ADP Enrichment

CVE Program Container

Additional References

CISA ADP Vulnrichment

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

References