CVE-2023-22407

Junos OS and Junos OS Evolved: An RPD crash can happen due to an MPLS TE tunnel configuration change on a directly connected router

MEDIUM

6.5

CVSS Score

Published: January 12, 2023 at 12:00 AM UTC

Updated: June 17, 2026 at 05:35 AM UTC

3 products affected across 2 vendorsJunosJunos OS EvolvedJunos OS Evolved

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Severity

MEDIUM6.5

Exploit prediction

EPSS 0.3%

SSVC

No known exploit

Description

An Incomplete Cleanup vulnerability in the Routing Protocol Daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an adjacent, unauthenticated attacker to cause a Denial of Service (DoS). An rpd crash can occur when an MPLS TE tunnel configuration change occurs on a directly connected router. This issue affects: Juniper Networks Junos OS All versions prior to 18.4R2-S7; 19.1 versions prior to 19.1R3-S2; 19.2 versions prior to 19.2R3; 19.3 versions prior to 19.3R3; 19.4 versions prior to 19.4R3; 20.1 versions prior to 20.1R2; 20.2 versions prior to 20.2R2. Juniper Networks Junos OS Evolved All versions prior to 19.2R3-EVO; 19.3 versions prior to 19.3R3-EVO; 19.4 versions prior to 19.4R3-EVO; 20.1 versions prior to 20.1R3-EVO; 20.2 versions prior to 20.2R2-EVO.

Affected

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

Junos OS Evolved · Juniper

95%

v < 19.219.2 r1 19.2 r2 19.3 r1 19.3 r2 19.4 r1 19.4 r1-s1 19.4 r2 19.4 r2-s1 19.4 r2-s2 20.1 20.1 r1 20.1 r1-s1 20.1 r2 20.1 r2-s1 20.1 r2-s2 20.1 r2-s3 20.1 r2-s4 20.1 r2-s5 20.2 20.2 r1 20.2 r1-s1

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

Junos · Juniper Networks

95%

v < 18.4v < 18.4R2-S719.1 ≤ v < 19.1R3-S219.2 ≤ v < 19.2R319.3 ≤ v < 19.3R319.4 ≤ v < 19.4R320.1 ≤ v < 20.1R220.2 ≤ v < 20.2R218.4 18.4 r1 18.4 r1-s1 18.4 r1-s2 18.4 r1-s3 18.4 r1-s4 18.4 r1-s5 18.4 r1-s6 18.4 r1-s7 18.4 r2 18.4 r2-s1 18.4 r2-s10 18.4 r2-s2 18.4 r2-s3 18.4 r2-s4 18.4 r2-s5 18.4 r2-s6 19.1 19.1 r1 19.1 r1-s1 19.1 r1-s2 19.1 r1-s3 19.1 r1-s4 19.1 r1-s5 19.1 r1-s6 19.1 r2 19.1 r2-s1 19.1 r2-s2 19.1 r2-s3 19.1 r3 19.1 r3-s1 19.2 19.2 r1 19.2 r1-s1 19.2 r1-s2 19.2 r1-s3 19.2 r1-s4 19.2 r1-s5 19.2 r1-s6 19.2 r1-s7 19.2 r1-s8 19.2 r1-s9 19.2 r2 19.2 r2-s1 19.2 r3 19.2 r3-s1 19.3 19.3 r1 19.3 r1-s1 19.3 r2 19.3 r2-s1 19.3 r2-s2 19.3 r2-s3 19.3 r2-s4 19.3 r2-s5 19.3 r2-s6 19.4 19.4 r1 19.4 r1-s1 19.4 r1-s2 19.4 r1-s3 19.4 r1-s4 19.4 r2 19.4 r2-s1 19.4 r2-s2 19.4 r2-s3 19.4 r2-s4 19.4 r2-s5 19.4 r2-s6 19.4 r2-s7 20.1 20.1 r1 20.1 r1-s1 20.1 r1-s2 20.1 r1-s3 20.1 r1-s4 20.2 20.2 r1 20.2 r1-s1 20.2 r1-s2 20.2 r1-s3

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

Affected range stops below 18.4R2-S7, so it looks safe — our inference, not a vendor statement

Affected range stops below 19.1R3-S2, so it looks safe — our inference, not a vendor statement

Affected range stops below 19.2R3, so it looks safe — our inference, not a vendor statement

Affected range stops below 19.3R3, so it looks safe — our inference, not a vendor statement

Affected range stops below 19.4R3, so it looks safe — our inference, not a vendor statement

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

Affected range stops below 20.2R2, so it looks safe — our inference, not a vendor statement

Junos OS Evolved · Juniper Networks

60%

v < 19.2R3-EVO19.3 ≤ v < 19.3R3-EVO19.4 ≤ v < 19.4R3-EVO20.1 ≤ v < 20.1R3-EVO20.2 ≤ v < 20.2R2-EVO19.3 19.4 20.1 20.2

Affected range stops below 19.2R3-EVO, so it looks safe — our inference, not a vendor statement

Affected range stops below 19.3R3-EVO, so it looks safe — our inference, not a vendor statement

Affected range stops below 19.4R3-EVO, so it looks safe — our inference, not a vendor statement

Affected range stops below 20.1R3-EVO, so it looks safe — our inference, not a vendor statement

Affected range stops below 20.2R2-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/JSA70203

References (1)

Vendor Advisory

Source: [email protected]

https://kb.juniper.net/JSA70203

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.5MEDIUMjuniper

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

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-459

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