#VU82111 Improper check or handling of exceptional conditions in Juniper Junos OS - CVE-2023-44203
Vulnerability identifier: #VU82111
Vulnerability risk: Medium
CVSSv4.0: 4.9 [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/E:U/U:Green]
CVE-ID:
CWE-ID:
CWE-703
Exploitation vector: Local network
Exploit availability: No
Vulnerable software:
Juniper Junos OS
Operating systems & Components /
Operating system
Vendor: Juniper Networks, Inc.
Description
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.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
Juniper Junos OS: 20.4R1-S1, 20.4R2-S1, 20.4R2-S2, 20.4R3-S1, 20.4R3-S2, 20.4R3-S3, 20.4R3-S4, 20.4, 20.4R1, 20.4R2, 20.4R3, 21.1R1-S1, 21.1R2-S1, 21.1R2-S2, 21.1R3-S1, 21.1R3-S2, 21.1R3-S3, 21.1, 21.1R1, 21.1R2, 21.1R3, 21.2R1-S1, 21.2R1-S2, 21.2R2-S1, 21.2R2-S2, 21.2R3-S1, 21.2R3-S2, 21.2R1, 21.2R2, 21.2R3, 21.3R1-S1, 21.3R1-S2, 21.3R2-S1, 21.3R2-S2, 21.3R3-S1, 21.3R3-S2, 21.3R3-S3, 21.3R3-S4, 21.3R1, 21.3R2, 21.3R3, 21.4R1-S1, 21.4R1-S2, 21.4R2-S1, 21.4R2-S2, 21.4R3-S1, 21.4R1, 21.4R2, 21.4R3, 22.1R1-S1, 22.1R1-S2, 22.1R2-S1, 22.1R2-S2, 22.1R1, 22.1R2, 22.2R1-S1, 22.2R1-S2, 22.2R2-S1, 22.2R2-S2, 22.2R1, 22.2R2, 22.3R1-S1, 22.3R1-S2, 22.3R1
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
