Input validation error in Juniper Junos OS and Junos OS Evolved - CVE-2023-4481

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Main Vulnerability Database Vulnerabilities #VU80111

Input validation error in Juniper Junos OS and Junos OS Evolved - CVE-2023-4481

Published: August 29, 2023 / Updated: October 2, 2023


Vulnerability identifier: #VU80111
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/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: CVE-2023-4481
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vendor: Juniper Networks, Inc.
Affected software:
Juniper Junos OS
Junos OS Evolved

Detailed vulnerability description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input in the Routing Protocol Daemon (rpd). A remote attacker can send specially crafted BGP UPDATE messages over an established BGP session and perform a denial of service (DoS) attack.

This issue affects eBGP and iBGP, in both IPv4 and IPv6 implementations but requires a remote attacker to have at least one established BGP session.


How to mitigate CVE-2023-4481

Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

The vendor is preparing to resolve the vulnerability in the upcoming releases:

Junos OS: 23.4R1*, and all subsequent releases.

Junos OS Evolved: 23.4R1-EVO*, and all subsequent releases.


Sources