PT-2023-6303 · Juniper Networks · Junos

Published 2023-10-11 · Updated 2023-10-20 · CVE-2023-44193

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Juniper Networks Junos OS versions prior to 20.4R3-S7 Juniper Networks Junos OS version 21.1 versions prior to 21.1R3-S5 Juniper Networks Junos OS version 21.2 versions prior to 21.2R3-S4 Juniper Networks Junos OS version 21.3 versions prior to 21.3R3-S4 Juniper Networks Junos OS version 21.4 versions prior to 21.4R3-S3 Juniper Networks Junos OS version 22.1 versions prior to 22.1R3-S1 Juniper Networks Junos OS version 22.2 versions prior to 22.2R2-S1, 22.2R3 Juniper Networks Junos OS version 22.3 versions prior to 22.3R1-S2, 22.3R2

Description An Improper Release of Memory Before Removing Last Reference issue in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS allows a local, low privileged attacker to cause an FPC crash, leading to Denial of Service (DoS). This issue is triggered when Connectivity-Fault-Management (CFM) is enabled in a VPLS scenario and a specific LDP related command is run. Continued execution of this command can lead to sustained Denial of Service condition.

Recommendations For Juniper Networks Junos OS version prior to 20.4R3-S7, update to version 20.4R3-S7 or later. For Juniper Networks Junos OS version 21.1 prior to 21.1R3-S5, update to version 21.1R3-S5 or later. For Juniper Networks Junos OS version 21.2 prior to 21.2R3-S4, update to version 21.2R3-S4 or later. For Juniper Networks Junos OS version 21.3 prior to 21.3R3-S4, update to version 21.3R3-S4 or later. For Juniper Networks Junos OS version 21.4 prior to 21.4R3-S3, update to version 21.4R3-S3 or later. For Juniper Networks Junos OS version 22.1 prior to 22.1R3-S1, update to version 22.1R3-S1 or later. For Juniper Networks Junos OS version 22.2 prior to 22.2R2-S1, 22.2R3, update to version 22.2R2-S1, 22.2R3 or later. For Juniper Networks Junos OS version 22.3 prior to 22.3R1-S2, 22.3R2, update to version 22.3R1-S2, 22.3R2 or later.

Fix

DoS

Memory Leak

Weakness Enumeration

CWE-401

Related Identifiers

BDU:2023-07014

CVE-2023-44193

Affected Products

Junos

References · 5

• https://osv.dev/vulnerability/CVE-2023-44193 · Vendor Advisory
• https://bdu.fstec.ru/vul/2023-07014 · Security Note
• https://supportportal.juniper.net/JSA73157 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2023-44193 · Security Note
• https://twitter.com/CVEnew/status/1712610876484915315 · Twitter Post