CVE-2020-1608

Junos OS: MX Series: In BBE configurations, receipt of a specific MPLS or IPv6 packet causes a Denial of Service

HIGH

7.5

CVSS Score

Published: January 15, 2020 at 08:40 AM UTC

Updated: June 17, 2026 at 03:01 AM UTC

17 products affected across 2 vendorsJunosMx960Mx480

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Severity

HIGH7.5

Exploit prediction

EPSS 1%

Description

Receipt of a specific MPLS or IPv6 packet on the core facing interface of an MX Series device configured for Broadband Edge (BBE) service may trigger a kernel crash (vmcore), causing the device to reboot. The issue is specific to the processing of packets destined to BBE clients connected to MX Series subscriber management platforms. This issue affects MX Series running Juniper Networks Junos OS: 17.2 versions starting from17.2R2-S6, 17.2R3 and later releases, prior to 17.2R3-S3; 17.3 versions starting from 17.3R2-S4, 17.3R3-S2 and later releases, prior to 17.3R2-S5, 17.3R3-S5; 17.4 versions starting from 17.4R2 and later releases, prior to 17.4R2-S7,17.4R3; 18.1 versions starting from 18.1R2-S3, 18.1R3 and later releases, prior to 18.1R3-S6; 18.2 versions starting from18.2R1-S1, 18.2R2 and later releases, prior to 18.2R3-S2; 18.2X75 versions prior to 18.2X75-D51, 18.2X75-D60; 18.3 versions prior to 18.3R3; 18.4 versions prior to 18.4R2; 19.1 versions prior to 19.1R1-S3, 19.1R2; 19.2 versions prior to 19.2R1-S2, 19.2R2. This issue does not affect Juniper Networks Junos OS versions prior to 17.2R2-S6.

Affected

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

Junos · Juniper Networks

95%

17.2R2-S6, 17.2R3 ≤ v < 17.2*17.3R2-S4, 17.3R3-S2 ≤ v < 17.3*17.4R2 ≤ v < 17.4*18.1R2-S3, 18.1R3 ≤ v < 18.1*18.2R1-S1, 18.2R2 ≤ v < 18.2*18.2X75 ≤ v < 18.2X75-D51, 18.2X75-D6018.3 ≤ v < 18.3R318.4 ≤ v < 18.4R219.1 ≤ v < 19.1R1-S3, 19.1R219.2 ≤ v < 19.2R1-S2, 19.2R217.2 17.2 r1-s2 17.2 r1-s4 17.2 r1-s7 17.2 r1-s8 17.2 r2-s6 17.2 r2-s7 17.2 r3-s1 17.2 r3-s2 17.2R2-S6 17.2R3 17.3 17.3 r1-s1 17.3 r2 17.3 r2-s1 17.3 r2-s2 17.3 r3-s1 17.3 r3-s2 17.3 r3-s3 17.3 r3-s4 17.3R2-S4 17.3R3-S2 17.4 17.4 r1 17.4 r1-s1 17.4 r1-s2 17.4 r1-s4 17.4 r1-s6 17.4 r1-s7 17.4 r2 17.4 r2-s1 17.4 r2-s2 17.4 r2-s3 17.4 r2-s4 17.4 r2-s5 17.4 r2-s6 17.4R2 18.1 18.1 r2 18.1 r2-s1 18.1 r2-s2 18.1 r2-s4 18.1 r3 18.1 r3-s2 18.1 r3-s3 18.1 r3-s4 18.1R2-S3 18.1R3 18.2 18.2 r1-s5 18.2 r2-s1 18.2 r2-s2 18.2 r2-s3 18.2 r2-s4 18.2 r3 18.2 r3-s1 18.2R1-S1 18.2R2 18.2X7518.2x7518.2x75 d20 18.2x75 d40 18.3 18.3 r1 18.3 r1-s1 18.3 r1-s2 18.3 r1-s3 18.3 r2 18.4 18.4 r1 18.4 r1-s2 19.1 19.1 r1 19.1 r1-s1 19.1 r1-s2 19.2 19.2 r1 19.2 r1-s1

Affected range stops below 17.2*, so it looks safe — our inference, not a vendor statement

Vendor states this is fixed in 17.2R1 (unaffected)

Affected range stops below 17.3*, so it looks safe — our inference, not a vendor statement

Affected range stops below 17.4*, so it looks safe — our inference, not a vendor statement

Affected range stops below 18.1*, so it looks safe — our inference, not a vendor statement

Affected range stops below 18.2*, so it looks safe — our inference, not a vendor statement

Affected range stops below 18.2X75-D51, 18.2X75-D60, so it looks safe — our inference, not a vendor statement

Affected range stops below 18.3R3, so it looks safe — our inference, not a vendor statement

Affected range stops below 18.4R2, so it looks safe — our inference, not a vendor statement

Affected range stops below 19.1R1-S3, 19.1R2, so it looks safe — our inference, not a vendor statement

Affected range stops below 19.2R1-S2, 19.2R2, so it looks safe — our inference, not a vendor statement

juniper-mx10 (environment) · juniper-mx10003 (environment) · juniper-mx10008 (environment) · juniper-mx10016 (environment) · juniper-mx104 (environment) · juniper-mx150 (environment) · juniper-mx2008 (environment) · juniper-mx2010 (environment) · juniper-mx2020 (environment) · juniper-mx204 (environment) · juniper-mx240 (environment) · juniper-mx40 (environment) · juniper-mx480 (environment) · juniper-mx5 (environment) · juniper-mx80 (environment) · juniper-mx960 (environment)

Mx10 · Juniperdevice

80%

All versions

Mx10003 · Juniperdevice

80%

All versions

Mx10008 · Juniperdevice

80%

All versions

Mx10016 · Juniperdevice

80%

All versions