CVE-2022-22233

Junos OS and Junos OS Evolved: In an SR to LDP interworking scenario, with SRMS, when a specific low privileged command is issued on an ABR rpd will crash

MEDIUM

5.5

CVSS Score

Published: October 18, 2022 at 02:46 AM UTC

Updated: June 17, 2026 at 04:28 AM UTC

3 products affected across 2 vendorsJunosJunos OS EvolvedJunos OS Evolved

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Severity

MEDIUM5.5

Exploit prediction

EPSS 0.2%

SSVC

No known exploit

Description

An Unchecked Return Value to NULL Pointer Dereference vulnerability in Routing Protocol Daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows a locally authenticated attacker with low privileges to cause a Denial of Service (DoS). In Segment Routing (SR) to Label Distribution Protocol (LDP) interworking scenario, configured with Segment Routing Mapping Server (SRMS) at any node, when an Area Border Router (ABR) leaks the SRMS entries having "S" flag set from IS-IS Level 2 to Level 1, an rpd core might be observed when a specific low privileged CLI command is issued. This issue affects: Juniper Networks Junos OS 21.4 versions prior to 21.4R1-S2, 21.4R2-S1, 21.4R3; 22.1 versions prior to 22.1R2. Juniper Networks Junos OS Evolved 21.4-EVO versions prior to 21.4R1-S2-EVO, 21.4R2-S1-EVO, 21.4R3-EVO; 22.1-EVO versions prior to 22.1R2-EVO. This issue does not affect: Juniper Networks Junos OS versions prior to 21.4R1. Juniper Networks Junos OS Evolved versions prior to 21.4R1-EVO.

Affected

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

Junos OS Evolved · Juniper

95%

21.4 21.4 r1 21.4 r1-s1 21.4 r2 22.1 r1

Junos · Juniper Networks

95%

21.4 ≤ v < 21.4R1-S2, 21.4R2-S1, 21.4R322.1 ≤ v < 22.1R221.4 21.4 r1 21.4 r1-s1 21.4 r2 22.1 22.1 r1 22.1 r1-s1

Vendor states this is fixed in 21.4R1 (unaffected)

Affected range stops below 21.4R1-S2, 21.4R2-S1, 21.4R3, so it looks safe — our inference, not a vendor statement

Affected range stops below 22.1R2, so it looks safe — our inference, not a vendor statement

Junos OS Evolved · Juniper Networks

60%

21.4-EVO ≤ v < 21.4R1-S2-EVO, 21.4R2-S1-EVO, 21.4R3-EVO22.1-EVO ≤ v < 22.1R2-EVO21.4-EVO 22.1-EVO

Vendor states this is fixed in 21.4R1-EVO (unaffected)

Affected range stops below 21.4R1-S2-EVO, 21.4R2-S1-EVO, 21.4R3-EVO, so it looks safe — our inference, not a vendor statement

Affected range stops below 22.1R2-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/JSA69887

References (1)

Vendor Advisory

Source: [email protected]

https://kb.juniper.net/JSA69887

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

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

CVSS

5.5MEDIUMjuniper

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

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-690CWE-252

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