CVE-2020-1648

Junos OS and Junos OS Evolved: RPD crash when processing a specific BGP packet

HIGH

7.5

CVSS Score

Published: July 17, 2020 at 06:40 PM UTC

Updated: June 17, 2026 at 03:02 AM UTC

3 products affected across 2 vendorsJunosJunos OS EvolvedJunos OS Evolved

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Severity

HIGH7.5

Exploit prediction

EPSS 1%

Description

On Juniper Networks Junos OS and Junos OS Evolved devices, processing a specific BGP packet can lead to a routing process daemon (RPD) crash and restart. This issue can occur even before the BGP session with the peer is established. Repeated receipt of this specific BGP packet can result in an extended Denial of Service (DoS) condition. This issue affects: Juniper Networks Junos OS: 18.2X75 versions starting from 18.2X75-D50.8, 18.2X75-D60 and later versions, prior to 18.2X75-D52.8, 18.2X75-D53, 18.2X75-D60.2, 18.2X75-D65.1, 18.2X75-D70; 19.4 versions 19.4R1 and 19.4R1-S1; 20.1 versions prior to 20.1R1-S2, 20.1R2. Juniper Networks Junos OS Evolved: 19.4-EVO versions prior to 19.4R2-S2-EVO; 20.1-EVO versions prior to 20.1R2-EVO. This issue does not affect: Juniper Networks Junos OS releases prior to 19.4R1. Juniper Networks Junos OS Evolved releases prior to 19.4R1-EVO.

Affected

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

Junos OS Evolved · Juniper

95%

19.4 r1 19.4 r2 19.4 r2-s1 20.1 r1

Junos · Juniper Networks

95%

18.2X75-D50.8 18.2X75-D60 ≤ v < 18.2X75*20.1 ≤ v < 20.1R1-S2, 20.1R218.2X75-D50.8 18.2X75-D6018.2x7518.2x75 d20 18.2x75 d30 18.2x75 d40 19.4 r1 19.4 r1-s1 20.1 20.1 r1 20.1 r1-s1

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

Vendor states this is fixed in 19.4 (unaffected)

Affected range stops below 20.1R1-S2, 20.1R2, so it looks safe — our inference, not a vendor statement

Junos OS Evolved · Juniper Networks

60%

20.1-EVO ≤ v < 20.1R2-EVO20.1-EVO

Vendor states this is fixed in 19.4-EVO (unaffected)

Affected range stops below 20.1R2-EVO, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

https://kb.juniper.net/JSA11035

References (1)

x_refsource_CONFIRMVendor Advisory

Source: [email protected]

https://kb.juniper.net/JSA11035

CVSS

7.5HIGHjuniper

Attack Vector: NETWORK
Complexity: LOW
Privileges: NONE
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: NONE
Integrity: NONE
Availability: HIGH

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-159CWE-690NVD-CWE-noinfo

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