CVE-2023-36833

CVE.org · Published

Record status: Published
Identifier year (not publication year): 2023
Source publication: Jul 14, 2023
Source updated: Oct 22, 2024
Imported by cveboard: Oct 24, 2026
Source snapshot: cve_2026-10-24_midnight_baseline · Oct 24, 2026

CNA source text (English)

Junos OS Evolved: PTX10001-36MR, and PTX10004, PTX10008, PTX10016 with LC1201/1202: The aftman-bt process will crash in a MoFRR scenario after multiple link flaps

A Use After Free vulnerability in the packet forwarding engine (PFE) of Juniper Networks Junos OS Evolved on PTX10001-36MR, and PTX10004, PTX10008, PTX10016 with LC1201/1202 allows an adjacent, unauthenticated attacker to cause a Denial of Service (DoS). The process 'aftman-bt' will crash after multiple flaps on a multicast-only fast reroute (MoFRR) enabled interface. This will cause the respective FPC to stop forwarding traffic and it needs to be rebooted to restore the service. An indication that the system experienced this issue is the following log message: <date> <hostname> evo-aftmand-bt[<pid>]: [Error] jexpr_fdb: sanity check failed, ... , app_name L3 Mcast Routes This issue affects Juniper Networks Junos OS Evolved on PTX10001-36MR, PTX10004, PTX10008, PTX10016 with LC1201/1202: 21.2 version 21.2R1-EVO and later versions; 21.3 version 21.3R1-EVO and later versions; 21.4 versions prior to 21.4R3-S3-EVO; 22.1 version 22.1R1-EVO and later versions; 22.2 versions prior to 22.2R3-S2-EVO; 22.3 versions prior to 22.3R3-EVO; 22.4 versions prior to 22.4R1-S2-EVO, 22.4R2-EVO.

Scoped product and version facts

Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.

Exploitation unknown; this catalogue does not assess exploitation.

Junos OS Evolved

Vendor: Juniper Networks
Product: Junos OS Evolved
Platforms: PTX10001-36MR
PTX10004
PTX10008
PTX10016
Default status: unaffected

Junos OS Evolved · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
21.2	`affected`	custom	21.2*	Unavailable	`21.2R1-EVO` → `affected`
21.3	`affected`	custom	21.3*	Unavailable	`21.3R1-EVO` → `affected`
21.4	`affected`	custom	21.4R3-S3-EVO	Unavailable	None listed
22.1	`affected`	custom	22.1*	Unavailable	`22.1R1-EVO` → `affected`
22.2	`affected`	custom	22.2R3-S2-EVO	Unavailable	None listed
22.3	`affected`	custom	22.3R3-EVO	Unavailable	None listed
22.4	`affected`	custom	22.4R1-S2-EVO, 22.4R2-EVO	Unavailable	None listed