PT-2023-6311 · Juniper Networks · Junos

CVE-2023-44192 · Published 2023-10-11 · Updated 2023-10-20

Positive Technologies (AI Summary)

CVSS v2.0

7.8

High

Base vector

AV:N/AC:L/Au:N/C:N/I:N/A:C

Name of the Vulnerable Software and Affected Versions Juniper Networks Junos OS QFX5000 Series versions prior to 20.4R3-S6 Juniper Networks Junos OS QFX5000 Series versions 21.1 prior to 21.1R3-S5 Juniper Networks Junos OS QFX5000 Series versions 21.2 prior to 21.2R3-S5 Juniper Networks Junos OS QFX5000 Series versions 21.3 prior to 21.3R3-S4 Juniper Networks Junos OS QFX5000 Series versions 21.4 prior to 21.4R3-S3 Juniper Networks Junos OS QFX5000 Series versions 22.1 prior to 22.1R3-S2 Juniper Networks Junos OS QFX5000 Series versions 22.2 prior to 22.2R2-S2, 22.2R3 Juniper Networks Junos OS QFX5000 Series versions 22.3 prior to 22.3R2-S1, 22.3R3 Juniper Networks Junos OS QFX5000 Series versions 22.4 prior to 22.4R1-S2, 22.4R2

Description An Improper Input Validation vulnerability in the Packet Forwarding Engine of Juniper Networks Junos OS allows an unauthenticated, network-based attacker to cause memory leak, leading to Denial of Service (DoS). This issue is observed when pseudo-VTEP is configured under EVPN-VXLAN scenario, and specific DHCP packets are transmitted, causing DMA memory leak. Continuous receipt of these specific DHCP packets will cause memory leak to reach 99% and then cause the protocols to stop working and traffic is impacted, leading to Denial of Service (DoS) condition. To confirm the memory leak, monitor for "sheaf:possible leak" and "vtep not found" messages in the logs.

Recommendations For Juniper Networks Junos OS QFX5000 Series versions prior to 20.4R3-S6, update to version 20.4R3-S6 or later. For Juniper Networks Junos OS QFX5000 Series versions 21.1 prior to 21.1R3-S5, update to version 21.1R3-S5 or later. For Juniper Networks Junos OS QFX5000 Series versions 21.2 prior to 21.2R3-S5, update to version 21.2R3-S5 or later. For Juniper Networks Junos OS QFX5000 Series versions 21.3 prior to 21.3R3-S4, update to version 21.3R3-S4 or later. For Juniper Networks Junos OS QFX5000 Series versions 21.4 prior to 21.4R3-S3, update to version 21.4R3-S3 or later. For Juniper Networks Junos OS QFX5000 Series versions 22.1 prior to 22.1R3-S2, update to version 22.1R3-S2 or later. For Juniper Networks Junos OS QFX5000 Series versions 22.2 prior to 22.2R2-S2, 22.2R3, update to version 22.2R2-S2, 22.2R3 or later. For Juniper Networks Junos OS QFX5000 Series versions 22.3 prior to 22.3R2-S1, 22.3R3, update to version 22.3R2-S1, 22.3R3 or later. For Juniper Networks Junos OS QFX5000 Series versions 22.4 prior to 22.4R1-S2, 22.4R2, update to version 22.4R1-S2, 22.4R2 or later. As a temporary workaround, consider monitoring the system logs for "sheaf:possible leak" and "vtep not found" messages to detect potential memory leaks.

Fix

DoS

Memory Leak

RCE

Weakness Enumeration

CWE-401

CWE-20

Related Identifiers

BDU:2023-07022

CVE-2023-44192

Affected Products

Junos

References · 5

• https://bdu.fstec.ru/vul/2023-07022 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2023-44192 · Security Note
• https://supportportal.juniper.net/JSA73156 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2023-44192 · Vendor Advisory
• https://twitter.com/CVEnew/status/1712610877629948137 · Twitter Post