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Medium severity5.9NVD Advisory· Published Jan 13, 2023· Updated Jun 17, 2026

CVE-2023-22402

CVE-2023-22402

Description

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.

Affected products

16
  • Juniper Networks/OS Evolved16 versions
    cpe:2.3:o:juniper:junos_os_evolved:21.3:-:*:*:*:*:*:*+ 15 more
    • cpe:2.3:o:juniper:junos_os_evolved:21.3:-:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos_os_evolved:21.3:r1-s1:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos_os_evolved:21.3:r1:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos_os_evolved:21.3:r2-s1:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos_os_evolved:21.3:r2-s2:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos_os_evolved:21.3:r2:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos_os_evolved:21.4:-:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos_os_evolved:21.4:r1-s1:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos_os_evolved:21.4:r1-s2:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos_os_evolved:21.4:r1:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos_os_evolved:22.1:r1-s1:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos_os_evolved:22.1:r1-s2:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos_os_evolved:22.1:r1:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos_os_evolved:22.2:r1:*:*:*:*:*:*
    • (no CPE)
    • (no CPE)range: 21.3

Patches

Vulnerability mechanics

References

1

News mentions

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