CVE-2023-44192

Junos OS: QFX5000 Series: DMA memory leak is observed when specific DHCP packets are transmitted over pseudo-VTEP

HIGH

7.5

CVSS Score

Published: October 12, 2023 at 11:03 PM UTC

Updated: June 17, 2026 at 06:27 AM UTC

9 products affected across 2 vendorsJunosQfk5120Qfk5230

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Severity

HIGH7.5

Exploit prediction

EPSS 0.6%

SSVC

No known exploit

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). On all Junos OS QFX5000 Series platforms, when pseudo-VTEP (Virtual Tunnel End Point) is configured under EVPN-VXLAN scenario, and specific DHCP packets are transmitted, DMA memory leak is observed. 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. A manual reboot of the system recovers from the memory leak. To confirm the memory leak, monitor for "sheaf:possible leak" and "vtep not found" messages in the logs. This issue affects: Juniper Networks Junos OS QFX5000 Series: * All versions prior to 20.4R3-S6; * 21.1 versions prior to 21.1R3-S5; * 21.2 versions prior to 21.2R3-S5; * 21.3 versions prior to 21.3R3-S4; * 21.4 versions prior to 21.4R3-S3; * 22.1 versions prior to 22.1R3-S2; * 22.2 versions prior to 22.2R2-S2, 22.2R3; * 22.3 versions prior to 22.3R2-S1, 22.3R3; * 22.4 versions prior to 22.4R1-S2, 22.4R2.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Junos · Juniper Networks

95%

v < 20.4v < 20.4R3-S621.1 ≤ v < 21.1R3-S521.2 ≤ v < 21.2r3-s521.3 ≤ v < 21.3R3-S421.4 ≤ v < 21.4r3-s322.1 ≤ v < 22.1R3-S222.2 ≤ v < 22.2R2-S2, 22.2R322.2 ≤ v < 22.2r2-s222.2 ≤ v < 22.2r322.3 ≤ v < 22..3r322.3 ≤ v < 22.3R2-S1, 22.3R322.3 ≤ v < 22.3r2-s122.4 ≤ v < 22.4R1-S2, 22.4R222.4 ≤ v < 22.4r222.4 ≤ v < 22.4r2-s220.4 20.4 r1 20.4 r1-s1 20.4 r2 20.4 r2-s1 20.4 r2-s2 20.4 r3 20.4 r3-s1 20.4 r3-s2 20.4 r3-s3 20.4 r3-s4 20.4 r3-s5 21.1 21.1 r1 21.1 r1-s1 21.1 r2 21.1 r2-s1 21.1 r2-s2 21.1 r3 21.1 r3-s1 21.1 r3-s2 21.1 r3-s3 21.1 r3-s4 21.2 21.2 r1 21.2 r1-s1 21.2 r1-s2 21.2 r2 21.2 r2-s1 21.2 r2-s2 21.2 r3 21.2 r3-s1 21.2 r3-s2 21.2 r3-s3 21.2 r3-s4 21.3 21.3 r1 21.3 r1-s1 21.3 r1-s2 21.3 r2 21.3 r2-s1 21.3 r2-s2 21.3 r3 21.3 r3-s1 21.3 r3-s2 21.3 r3-s3 21.4 21.4 r1 21.4 r1-s1 21.4 r1-s2 21.4 r2 21.4 r2-s1 21.4 r2-s2 21.4 r3 21.4 r3-s1 21.4 r3-s2 22.1 22.1 r1 22.1 r1-s1 22.1 r1-s2 22.1 r2 22.1 r2-s1 22.1 r2-s2 22.1 r3 22.1 r3-s1 22.2 22.2 r1 22.2 r1-s1 22.2 r1-s2 22.2 r2 22.2 r2-s1 22.3 22.3 r1 22.3 r1-s1 22.3 r1-s2 22.3 r2 22.3 r2-s1 22.4 22.4 r1 22.4 r1-s1

Affected range stops below 20.4, so it looks safe — our inference, not a vendor statement

Affected range stops below 20.4R3-S6, so it looks safe — our inference, not a vendor statement

Affected range stops below 21.1R3-S5, so it looks safe — our inference, not a vendor statement

Affected range stops below 21.2R3-S5, so it looks safe — our inference, not a vendor statement

Affected range stops below 21.3R3-S4, so it looks safe — our inference, not a vendor statement

Affected range stops below 21.4R3-S3, so it looks safe — our inference, not a vendor statement

Affected range stops below 22..3r3, so it looks safe — our inference, not a vendor statement

Affected range stops below 22.1R3-S2, so it looks safe — our inference, not a vendor statement

Affected range stops below 22.2R2-S2, 22.2R3, so it looks safe — our inference, not a vendor statement

Affected range stops below 22.2r2-s2, so it looks safe — our inference, not a vendor statement

Affected range stops below 22.2r3, so it looks safe — our inference, not a vendor statement

Affected range stops below 22.3R2-S1, 22.3R3, so it looks safe — our inference, not a vendor statement

Affected range stops below 22.3r2-s1, so it looks safe — our inference, not a vendor statement

Affected range stops below 22.4R1-S2, 22.4R2, so it looks safe — our inference, not a vendor statement

Affected range stops below 22.4r2, so it looks safe — our inference, not a vendor statement

Affected range stops below 22.4r2-s2, so it looks safe — our inference, not a vendor statement

juniper-qfk5110 (environment) · juniper-qfk5120 (environment) · juniper-qfk5130 (environment) · juniper-qfk5200 (environment) · juniper-qfk5210 (environment) · juniper-qfk5220 (environment) · juniper-qfk5230 (environment) · juniper-qfk5700 (environment)

Qfk5110 · Juniperdevice

80%

All versions

Qfk5120 · Juniperdevice

80%

All versions

Qfk5130 · Juniperdevice

80%

All versions

Qfk5200 · Juniperdevice

80%

All versions