CVE-2024-39541

Junos OS and Junos OS Evolved: Inconsistent information in the TE database can lead to an rpd crash

MEDIUM

6.5

CVSS Score

Published: July 11, 2024 at 04:17 PM UTC

Updated: June 17, 2026 at 07:42 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 Improper Handling of Exceptional Conditions vulnerability in the Routing Protocol Daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, adjacent attacker to cause a Denial-of-Service (DoS). When conflicting information (IP or ISO addresses) about a node is added to the Traffic Engineering (TE) database and then a subsequent operation attempts to process these, rpd will crash and restart. This issue affects: Junos OS: * 22.4 versions before 22.4R3-S1, * 23.2 versions before 23.2R2, * 23.4 versions before 23.4R1-S1, 23.4R2, This issue does not affect Junos OS versions earlier than 22.4R1. Junos OS Evolved: * 22.4-EVO versions before 22.4R3-S2-EVO, * 23.2-EVO versions before 23.2R2-EVO, * 23.4-EVO versions before 23.4R1-S1-EVO, 23.4R2-EVO, This issue does not affect Junos OS Evolved versions earlier than before 22.4R1.

Affected

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

Junos OS Evolved · Juniper

95%

22.4 22.4 r1 22.4 r1-s1 22.4 r1-s2 22.4 r2 22.4 r2-s1 22.4 r2-s2 22.4 r3 22.4 r3-s1 23.2 23.2 r1 23.2 r1-s1 23.2 r1-s2 23.4 23.4 r1 23.4 r2

Junos · Juniper Networks

95%

22.4 ≤ v < 22.4R3-S123.2 ≤ v < 23.2R223.4 ≤ v < 23.4R1-S1, 23.4R222.4 22.4 r1 22.4 r1-s1 22.4 r1-s2 22.4 r2 22.4 r2-s1 22.4 r2-s2 22.4 r3 23.2 23.2 r1 23.2 r1-s1 23.2 r1-s2 23.4 23.4 r1 23.4 r2

Vendor states this is fixed in 22.4R1 (unaffected)

Affected range stops below 22.4R3-S1, so it looks safe — our inference, not a vendor statement

Affected range stops below 23.2R2, so it looks safe — our inference, not a vendor statement

Affected range stops below 23.4R1-S1, 23.4R2, so it looks safe — our inference, not a vendor statement

Junos OS Evolved · Juniper Networks

60%

22.4-EVO ≤ v < 22.4R3-S2-EVO23.2-EVO ≤ v < 23.2R2-EVO23.4-EVO ≤ v < 23.4R1-S1-EVO, 23.4R2-EVO22.4-EVO 23.2-EVO 23.4-EVO

Vendor states this is fixed in 22.4R1 (unaffected)

Affected range stops below 22.4R3-S2-EVO, so it looks safe — our inference, not a vendor statement

Affected range stops below 23.2R2-EVO, so it looks safe — our inference, not a vendor statement

Affected range stops below 23.4R1-S1-EVO, 23.4R2-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://supportportal.juniper.net/JSA83001

References (1)

Vendor Advisory

Source: [email protected]

https://supportportal.juniper.net/JSA83001

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

StatusANALYZED

CWE

CWE-755

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