Improper Check for Unusual or Exceptional Conditions in Junos OS - CVE-2022-22217
Published: July 16, 2022
Vulnerability identifier: #VU65370
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2022-22217
CWE-ID: CWE-754
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to improper error handling in the Packet Forwarding Engine (PFE) caused by malformed MLD packets looping on a multi-homed Ethernet Segment Identifier (ESI) when VXLAN is configured. A remote attacker can send specially crafted MLD packets to the system and perform a denial of service (DoS) attack.
Affected software
Junos OS
How to mitigate CVE-2022-22217
The vulnerability affects QFX10K Series switches, including the QFX10002, QFX10008, and QFX10016.
Install updates from vendor's website.
Junos OS - addressed in versions 19.1R3-S9, 19.2R1-S9, 19.2R3-S5, 19.3R3-S6, 19.4R3-S8, 20.1R3-S4, 20.2R3-S4, 20.3R3-S2, 20.4R3-S2, 21.1R3, 21.2R2-S1, 21.2R3, 21.3R2, 21.4R1