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MEDIUM · 6.5

CVE-2023-44203

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 a...

Vulnerability Description

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.

CVSS Score

6.5

MEDIUM

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH

Affected Products

VendorProductVersions
JuniperJunos< 20.4
JuniperEx2300-
JuniperEx2300-24Mp-
JuniperEx2300-24P-
JuniperEx2300-24T-
JuniperEx2300-48Mp-
JuniperEx2300-48P-
JuniperEx2300-48T-
JuniperEx2300-C-
JuniperEx2300M-
JuniperEx3400-
JuniperEx4100-
JuniperEx4100-F-
JuniperEx4400-
JuniperEx4600-
JuniperQfx5100-
JuniperQfx5100-96S-
JuniperQfx5110-
JuniperQfx5120-
JuniperQfx5130-

Related Weaknesses (CWE)

CWE-703

References

FAQ

What is CVE-2023-44203?

CVE-2023-44203 is a vulnerability with a CVSS score of 6.5 (MEDIUM). 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 a...

How severe is CVE-2023-44203?

CVE-2023-44203 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2023-44203?

Check the references section above for vendor advisories and patch information. Affected products include: Juniper Junos, Juniper Ex2300, Juniper Ex2300-24Mp, Juniper Ex2300-24P, Juniper Ex2300-24T.