Main Vulnerability Database Vulnerabilities #VU77650

Input validation error in Junos OS Evolved and Junos OS - CVE-2023-0026

Published: June 22, 2023 / Updated: October 4, 2023

Vulnerability identifier: #VU77650

CSH Severity: Medium

CVSS v4: 8.7 [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]

CVE-ID: CVE-2023-0026

CWE-ID: CWE-20

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 insufficient validation of user-supplied input in the Routing Protocol Daemon (rpd) when processing BGP update messages. A remote attacker can send a specially crafted BGP update message over an established BGP session and perform a denial of service (DoS) attack.

Affected software

Junos OS Evolved
Junos OS

How to mitigate CVE-2023-0026

Install update from vendor's website.

Junos OS Evolved - update to 20.4R3-S8-EVO
Junos OS - update to 20.4R3-S8

External References

Related Security Bulletins