CVE-2024-30392

Junos OS: MX Series with SPC3 and MS-MPC/-MIC: When URL filtering is enabled and a specific URL request is received a flowd crash occurs

HIGH

7.5

CVSS Score

Published: April 12, 2024 at 03:07 PM UTC

Updated: June 17, 2026 at 07:26 AM UTC

1 product affected across 1 vendorJunos

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Severity

HIGH7.5

Exploit prediction

EPSS 0.7%

SSVC

No known exploit

Description

A Stack-based Buffer Overflow vulnerability in Flow Processing Daemon (flowd) of Juniper Networks Junos OS allows an unauthenticated, network-based attacker to cause Denial of Service (DoS). On all Junos OS MX Series platforms with SPC3 and MS-MPC/-MIC, when URL filtering is enabled and a specific URL request is received and processed, flowd will crash and restart. Continuous reception of the specific URL request will lead to a sustained Denial of Service (DoS) condition. This issue affects: Junos OS: * all versions before 21.2R3-S6, * from 21.3 before 21.3R3-S5, * from 21.4 before 21.4R3-S5, * from 22.1 before 22.1R3-S3, * from 22.2 before 22.2R3-S1, * from 22.3 before 22.3R2-S2, 22.3R3, * from 22.4 before 22.4R2-S1, 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-S6v < 21.2r3-s621.3 ≤ v < 21.3R3-S521.3 ≤ v < 21.3r3-s521.4 ≤ v < 21.4R3-S521.4 ≤ v < 21.4r3-s522.1 ≤ v < 21.1r3-s322.1 ≤ v < 22.1R3-S322.2 ≤ v < 22.2R3-S122.2 ≤ v < 22.2r3-s122.3 ≤ v < 22.3R2-S2, 22.3R322.3 ≤ v < 22.3r2-s222.3 ≤ v < 22.3r322.4 ≤ v < 22.4-r2-s222.4 ≤ v < 22.4R2-S1, 22.4R322.4 ≤ 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 21.3 21.3 r1 21.3 r1-s1 21.3 r1-s2 21.3 r2 21.3 r2-s1 21.3 r2-s2 21.3 r3 21.3 r3-s1 21.3 r3-s2 21.3 r3-s3 21.3 r3-s4 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 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 22.1 r3-s2 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 r2-s1 22.3 r3 22.4 22.4 r1 22.4 r1-s1 22.4 r1-s2 22.4 r2 22.4 r3

Affected range stops below 21.1r3-s3, so it looks safe — our inference, not a vendor statement

Affected range stops below 21.2R3-S6, so it looks safe — our inference, not a vendor statement

Affected range stops below 21.3R3-S5, so it looks safe — our inference, not a vendor statement

Affected range stops below 21.4R3-S5, so it looks safe — our inference, not a vendor statement

Affected range stops below 22.1R3-S3, 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-S2, 22.3R3, so it looks safe — our inference, not a vendor statement

Affected range stops below 22.3r2-s2, 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 22.4-r2-s2, so it looks safe — our inference, not a vendor statement

Affected range stops below 22.4R2-S1, 22.4R3, 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-ms-mic (environment) · juniper-ms-mpc (environment) · 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)