Riskcovery

CVE-2023-22402

Junos OS Evolved: The kernel might restart in a BGP scenario where "bgp auto-discovery" is enabled and such a neighbor flaps

State
Published
Severity
5.9 Medium
Published
Jan 12, 2023
Updated
Apr 7, 2025
Reserved
Dec 27, 2022

Read the record on cve.org

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.

Scores

CVSSScoreVectorSource
3.15.9 MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:Hjuniper

Weaknesses

Affected Products

ProductVersions
Junos OS EvolvedJuniper Networks
  • 21.3 to before 21.3R3-EVOAffected
  • 21.4 to before 21.4R2-EVOAffected
  • 22.1 to before 22.1R2-EVOAffected
  • 22.2 to before 22.2R1-S1-EVO, 22.2R2-EVOAffected

References

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