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Vulnerability · Published Jul 11, 2024 · Assigned by juniper

CVE-2024-39551Junos OS: SRX Series and MX Series with SPC3 and MS-MPC/MIC: Receipt of specific packets in H.323 ALG causes traffic drop

High 7.5

In plain English

A high-severity uncontrolled resource consumption in Junos OS from Juniper Networks. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 41% of all known vulnerabilities).

Severity (CVSS 3.1)7.5High
Exploit odds (30 days)0.5%top 58.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

An Uncontrolled Resource Consumption vulnerability in the H.323 ALG (Application Layer Gateway) of  Juniper Networks Junos OS on SRX Series and MX Series with SPC3 and MS-MPC/MIC, allows an unauthenticated network-based attacker to send specific packets causing traffic loss leading to Denial of Service (DoS).  Continued receipt and processing of these specific packets will sustain the Denial of Service condition. The memory usage can be monitored using the below command.   user@host> show usp memory segment sha data objcache jsf  This issue affects SRX Series and MX Series with SPC3 and MS-MPC/MIC:  *  20.4 before 20.4R3-S10,  *  21.2 before 21.2R3-S6,  *  21.3 before 21.3R3-S5,  *  21.4 before 21.4R3-S6,  *  22.1 before 22.1R3-S4,  *  22.2 before 22.2R3-S2,  *  22.3 before 22.3R3-S1,  *  22.4 before 22.4R3,  *  23.2 before 23.2R2.

Affected products (as reported)

VendorProductVersions
Juniper Networks Junos OS 20.4 – before 20.4R3-S1021.2 – before 21.2R3-S621.3 – before 21.3R3-S521.4 – before 21.4R3-S622.1 – before 22.1R3-S422.2 – before 22.2R3-S222.3 – before 22.3R3-S122.4 – before 22.4R3

Weakness: CWE-400 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References