Improper check or handling of exceptional conditions in Junos OS - CVE-2023-44203
Published: October 17, 2023
Vulnerability identifier: #VU82111
CSH Severity: Medium
CVSS v4: 7.1 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2023-44203
CWE-ID: CWE-703
Exploitation vector: Adjecent network
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to improper check or handling of exceptional conditions error in the Packet Forwarding Engine (pfe) when a specific IGMP packet is received in an isolated VLAN. A remote non-authenticated attacker can perform a denial of service (DoS) attack.
The vulnerability affects QFX5000 series, EX2300, EX3400, EX4100, EX4400 and EX4600 platforms only.
Affected software
Junos OS
How to mitigate CVE-2023-44203
Install updates from vendor's website.
Junos OS - addressed in versions 20.4R3-S5, 21.1R3-S4, 21.2R3-S3, 21.3R3-S5, 21.4R3-S2, 22.1R3, 22.2R3, 22.3R2, 22.4R1