CVE-2024-39545

Junos OS: SRX Series, MX Series with SPC3 and NFX350: When VPN tunnels parameters are not configured in specific way the iked process will crash

HIGH

7.5

CVSS Score

Published: July 11, 2024 at 04:22 PM UTC

Updated: June 17, 2026 at 07:42 AM UTC

1 product affected across 1 vendorJunos

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Severity

HIGH7.5

Exploit prediction

EPSS 0.5%

SSVC

No known exploit

Description

An Improper Check for Unusual or Exceptional Conditions vulnerability in the the IKE daemon (iked) of Juniper Networks Junos OS on SRX Series, MX Series with SPC3 and NFX350 allows allows an unauthenticated, network-based attacker sending specific mismatching parameters as part of the IPsec negotiation to trigger an iked crash leading to Denial of Service (DoS). This issue is applicable to all platforms that run iked. This issue affects Junos OS on SRX Series, MX Series with SPC3 and NFX350: * All versions before 21.2R3-S8, * from 21.4 before 21.4R3-S7, * from 22.1 before 22.1R3-S2, * from 22.2 before 22.2R3-S1, * from 22.3 before 22.3R2-S1, 22.3R3, * from 22.4 before 22.4R1-S2, 22.4R2, 22.4R3.

Affected

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

Junos · Juniper Networks

95%

v < 21.2v < 21.2R3-S821.4 ≤ v < 21.4R3-S722.1 ≤ v < 22.1R3-S222.2 ≤ v < 22.2R3-S122.3 ≤ v < 22.3R2-S122.3 ≤ v < 22.3R2-S1, 22.3R322.3 ≤ v < 22.3R322.4 ≤ v < 22.4R1-S222.4 ≤ v < 22.4R1-S2, 22.4R2, 22.4R322.4 ≤ v < 22.4R222.4 ≤ v < 22.4R321.2 21.2 r1 21.2 r1-s1 21.2 r1-s2 21.2 r2 21.2 r2-s1 21.2 r2-s2 21.2 r3 21.2 r3-s1 21.2 r3-s2 21.2 r3-s3 21.2 r3-s4 21.2 r3-s5 21.2 r3-s6 21.2 r3-s7 21.4 21.4 r1 21.4 r1-s1 21.4 r1-s2 21.4 r2 21.4 r2-s1 21.4 r2-s2 21.4 r3 21.4 r3-s1 21.4 r3-s2 21.4 r3-s3 21.4 r3-s4 21.4 r3-s5 21.4 r3-s6 22.1 22.1 r1 22.1 r1-s1 22.1 r1-s2 22.1 r2 22.1 r2-s1 22.1 r2-s2 22.1 r3 22.1 r3-s1 22.2 22.2 r1 22.2 r1-s1 22.2 r1-s2 22.2 r2 22.2 r2-s1 22.2 r2-s2 22.2 r3 22.3 22.3 r1 22.3 r1-s1 22.3 r1-s2 22.3 r2 22.3 r3 22.4 22.4 r1 22.4 r1-s1 22.4 r2 22.4 r3

Affected range stops below 21.2R3-S8, so it looks safe — our inference, not a vendor statement

Affected range stops below 21.4R3-S7, so it looks safe — our inference, not a vendor statement

Affected range stops below 22.1R3-S2, so it looks safe — our inference, not a vendor statement

Affected range stops below 22.2R3-S1, so it looks safe — our inference, not a vendor statement

Affected range stops below 22.3R2-S1, so it looks safe — our inference, not a vendor statement

Affected range stops below 22.3R2-S1, 22.3R3, so it looks safe — our inference, not a vendor statement

Affected range stops below 22.3R3, so it looks safe — our inference, not a vendor statement

Affected range stops below 22.4R1-S2, so it looks safe — our inference, not a vendor statement

Affected range stops below 22.4R1-S2, 22.4R2, 22.4R3, so it looks safe — our inference, not a vendor statement

Affected range stops below 22.4R2, so it looks safe — our inference, not a vendor statement

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

juniper-mx-spc3 (environment) · juniper-mx10004 (environment) · juniper-mx10008 (environment) · juniper-mx2008 (environment) · juniper-mx2010 (environment) · juniper-mx2020 (environment) · juniper-mx204 (environment) · juniper-mx240 (environment) · juniper-mx304 (environment) · juniper-mx480 (environment) · juniper-mx960 (environment) · juniper-nfx350 (environment) · juniper-srx1500 (environment) · juniper-srx1600 (environment) · juniper-srx2300 (environment) · juniper-srx300 (environment) · juniper-srx320 (environment) · juniper-srx340 (environment) · juniper-srx345 (environment) · juniper-srx380 (environment) · juniper-srx4100 (environment) · juniper-srx4120 (environment) · juniper-srx4200 (environment) · juniper-srx4300 (environment) · juniper-srx4600 (environment) · juniper-srx4700 (environment) · juniper-srx5400 (environment) · juniper-srx5600 (environment) · juniper-srx5800 (environment)