Use after free in Junos OS Evolved - CVE-2023-22402
Published: January 11, 2023
Vulnerability identifier: #VU82486
CSH Severity: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2023-22402
CWE-ID: CWE-416
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Junos OS Evolved
Junos OS Evolved
Software vendor:
Juniper Networks, Inc.
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 use after free error in the kernel. A remote non-authenticated attacker can cause a Denial of Service (DoS).
In a Non Stop Routing (NSR) scenario, an unexpected kernel restart might be observed if "bgp auto-discovery" is enabled and if there is a BGP neighbor flap of auto-discovery sessions for any reason.
This is a race condition which is outside of an attackers direct control and it depends on system internal timing whether this issue occurs.
Remediation
Install updates from vendor's website.