CVE-2023-36850

published 2023-07-14

CVE-2023-36850: An Improper Validation of Specified Index, Position, or Offset in Input vulnerability in the Connectivity Fault Management(CFM) module of Juniper Networks…

Priority P4 27 medium 6.5 CVSS 3.1

AV A AC L PR N UI N S U C N I N A H

An Improper Validation of Specified Index, Position, or Offset in Input vulnerability in the Connectivity Fault Management(CFM) module of Juniper Networks Junos OS on MX Series(except MPC10, MPC11 and LC9600) allows an adjacent attacker on the local broadcast domain to cause a Denial of Service(DoS).

Upon receiving a malformed CFM packet, the MPC crashes. Continued receipt of these packets causes a sustained denial of service. This issue can only be triggered when CFM hasn't been configured.

This issue affects:
Juniper Networks Junos OS
All versions prior to 19.1R3-S10 on MX Series;
19.2 versions prior to 19.2R3-S7 on MX Series;
19.3 versions prior to 19.3R3-S8 on MX Series;
19.4 versions prior to 19.4R3-S12 on MX Series;
20.1 version 20.1R1 and later versions on MX Series;
20.2 versions prior to 20.2R3-S7 on MX Series;
20.3 version 20.3R1 and later versions on MX Series;
20.4 versions prior to 20.4R3-S7 on MX Series;
21.1 versions prior to 21.1R3-S5 on MX Series;
21.2 versions prior to 21.2R3-S4 on MX Series;
21.3 versions prior to 21.3R3-S4 on MX Series;
21.4 versions prior to 21.4R3-S3 on MX Series;
22.1 versions prior to 22.1R3-S2 on MX Series;
22.2 versions prior to 22.2R3 on MX Series;
22.3 versions prior to 22.3R2, 22.3R3 on MX Series;
22.4 versions prior to 22.4R2 on MX Series.

Affected

34 ranges · showing 25

Vendor	Product	Version range	Fixed in
juniper	junos	—	—
juniper	junos	—	—
juniper	junos	—	—
juniper	junos	—	—
juniper	junos	—	—
juniper	junos	—	—
juniper	junos	—	—
juniper	junos	—	—
juniper	junos	—	—
juniper	junos	—	—
juniper	junos	—	—
juniper	junos	—	—
juniper	junos	—	—
juniper	junos	—	—
juniper	junos	—	—
juniper	junos	—	—
juniper	junos_os	—	—
juniper	mx_series	—	—
juniper_networks	junos_os	>= 19.2 < 19.2R3-S7	19.2R3-S7
juniper_networks	junos_os	>= 19.3 < 19.3R3-S8	19.3R3-S8
juniper_networks	junos_os	>= 19.4 < 19.4R3-S12	19.4R3-S12
juniper_networks	junos_os	>= 20.1 < 20.1*	20.1*
juniper_networks	junos_os	>= 20.2 < 20.2R3-S7	20.2R3-S7
juniper_networks	junos_os	>= 20.3 < 20.3*	20.3*
juniper_networks	junos_os	>= 20.4 < 20.4R3-S7	20.4R3-S7

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CWE-1285