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TI-2020-01597 Aliases CVE-2020-1646GHSA-3vf8-2x93-3hff

Junos OS and Junos OS Evolved: RPD crash while processing a specific BGP update information.

Priority LOW 35CWE-159Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA.

Summary

On Juniper Networks Junos OS and Junos OS Evolved devices, processing a specific UPDATE for an EBGP peer can lead to a routing process daemon (RPD) crash and restart. This issue occurs only when the device is receiving and processing the BGP UPDATE for an EBGP peer. This issue does not occur when the device is receiving and processing the BGP UPDATE for an IBGP peer. However, the offending BGP UPDATE can originally come from an EBGP peer, propagates through the network via IBGP peers without causing crash, then it causes RPD crash when it is processed for a BGP UPDATE towards an EBGP peer. Repeated receipt and processing of the same specific BGP UPDATE can result in an extended Denial of Service (DoS) condition. This issue affects: Juniper Networks Junos OS: 17.3R3-S6, 17.4R2-S7, and 18.1R3-S7. Juniper Networks Junos OS Evolved 19.2R2-EVO and later versions, prior to 19.3R1-EVO. Other Junos OS releases are not affected.

Why it matters now

EPSS 0.01014 63rd percentileScored 2026-11-07
Fix Fixed Junos OS Evolved (Juniper Networks): 19.3R1-EVO

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
JuniperJunos OS17.3R3-S6; 17.4R2-S7; 18.1R3-S7—No fix listedCNA
JuniperJunos OS Evolvedbefore 19.3R1-EVO; 19.2R2-EVO and later19.3R1-EVOPatch availableCNA
  • Junos OS VendorJuniper Affected 17.3R3-S6; 17.4R2-S7; 18.1R3-S7 Fixed in — No fix listed CNA
  • Junos OS Evolved VendorJuniper Affected before 19.3R1-EVO; 19.2R2-EVO and later Fixed in 19.3R1-EVO Patch available CNA

CPE configurations NVD · 4

CPEVersionsRoleVendor
cpe:2.3:o:juniper:junos:17.3:r3-s6:*:*:*:*:*:*17.3 r3-s6VulnerableJuniper
cpe:2.3:o:juniper:junos:17.4:r2-s7:*:*:*:*:*:*17.4 r2-s7VulnerableJuniper
cpe:2.3:o:juniper:junos:18.1:r3-s7:*:*:*:*:*:*18.1 r3-s7VulnerableJuniper
cpe:2.3:o:juniper:junos_os_evolved:19.2:r2:*:*:*:*:*:*19.2 r2VulnerableJuniper
  • cpe:2.3:o:juniper:junos:17.3:r3-s6:*:*:*:*:*:* Versions 17.3 r3-s6 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:17.4:r2-s7:*:*:*:*:*:* Versions 17.4 r2-s7 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:18.1:r3-s7:*:*:*:*:*:* Versions 18.1 r3-s7 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos_os_evolved:19.2:r2:*:*:*:*:*:* Versions 19.2 r2 Vulnerable ·Juniper

Remediation

  • Fix · CNA Junos OS Evolved (Juniper Networks) Fixed in 19.3R1-EVO

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-1646
  2. 2026-10-03 Alias added: GHSA-3vf8-2x93-3hff

References

Advisory 1

  • TI-2023-18638 Junos OS: EX and SRX Series: A PHP vulnerability in J-Web allows an unauthenticated to… KEVCVSS 3.1CRITICAL 9.8
  • TI-2020-01585 Out of Cycle Security Advisory: Junos OS: Security vulnerability in J-Web and web based (HTTP/HTTPS) services KEVCVSS 3.1CRITICAL 9.8
  • TI-2015-04610 Assertion failure in ISC BIND named via TKEY queries KEVCVSS 3.1HIGH 7.5
  • TI-2025-15550 Junos OS: An local attacker with shell access can execute arbitrary code KEVCVSS 4.0MEDIUM 6.7
  • TI-2023-18644 Junos OS: SRX Series: A vulnerability in J-Web allows an unauthenticated attacker to upload and download arbitrary files KEVCVSS 3.1MEDIUM 5.3
  • TI-2023-18640 Junos OS: EX Series: A vulnerability in J-Web allows an unauthenticated attacker to upload arbitrary files KEVCVSS 3.1MEDIUM 5.3
See all 792 →

Sources

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