Use After Free in Juniper Junos OS Evolved
CVE-2023-22402
A Use After Free vulnerability in the kernel of Juniper Networks Junos OS Evolved allows an unauthenticated, network-based attacker to 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. This issue affects Juniper Networks Junos OS Evolved: 21.3 versions prior to 21.3R3-EVO; 21.4 versions prior to 21.4R2-EVO; 22.1 versions prior to 22.1R2-EVO; 22.2 versions prior to 22.2R1-S1-EVO, 22.2R2-EVO.
Vulnerability class: Use-After-Free
EPSS: 0.005 (41.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Juniper Junos_os_evolved — versions 21.3, 21.4, 22.1
- Juniper Networks Junos Os Evolved — versions 21.3, 21.4, 22.1
Weakness classification (CWE)
References
- sirt@juniper.net (Vendor Advisory)
Frequently asked questions
- What is CVE-2023-22402?
- CVE-2023-22402 is a medium-severity vulnerability in Juniper Junos OS Evolved, classified under Use After Free. CVSS score: 5.9/10. Published 2023-01-13.
- How severe is CVE-2023-22402?
- Medium severity. CVSS v3 base score is 5.9 out of 10.