SB2023101753 - Denial of service in Juniper Junos OS pfe

Security Bulletin ID SB2023101753

CSH Severity

Medium

Patch available

YES

Number of vulnerabilities 1

Exploitation vector Adjecent network

Highest impact Denial of service

Breakdown by Severity

Low
Medium
High
Critical

Description

This security bulletin contains information about 1 vulnerability.

1) Improper check or handling of exceptional conditions (CVE-ID: CVE-2023-44203)

CWE-ID: CWE-703 - Improper Check or Handling of Exceptional Conditions

CVSSv4: 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

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.

Remediation

Install update from vendor's website.

References

https://supportportal.juniper.net/s/article/2023-10-Security-Bulletin-Junos-OS-QFX5000-series-EX2300-EX3400-EX4100-EX4400-and-EX4600-Packet-flooding-will-occur-when-IGMP-traffic-is-sent-to-an-isolated-VLAN-CVE-2023-44203