Juniper Networks Junos OS up to 23.2R1 on SRX/MX H.323 ALG resource consumption

CVSS Meta Temp Score
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CTI Interest Score
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7.3$0-$5k0.00

Summaryinfo

A vulnerability was found in Juniper Networks Junos OS up to 23.2R1 on SRX/MX and classified as problematic. This impacts an unknown function of the component H.323 ALG. The manipulation results in resource consumption. This vulnerability is known as CVE-2024-39551. It is possible to launch the attack remotely. No exploit is available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical has been found in Juniper Networks Junos OS up to 23.2R1 on SRX/MX. Affected is an unknown code of the component H.323 ALG. The manipulation with an unknown input leads to a resource consumption vulnerability. CWE is classifying the issue as CWE-400. The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources. This is going to have an impact on availability. CVE summarizes:

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.

The advisory is available at supportportal.juniper.net. This vulnerability is traded as CVE-2024-39551 since 06/25/2024. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1499 by the MITRE ATT&CK project.

Upgrading to version 20.4R3-S10, 21.2R3-S6, 21.3R3-S5, 21.4R3-S6, 22.1R3-S4, 22.2R3-S2, 22.3R3-S1, 22.4R3 or 23.2R2 eliminates this vulnerability.

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Productinfo

Type

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔍
CNA CVSS-BT Score: 🔍
CNA Vector: 🔍

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.3

VulDB Base Score: 7.5
VulDB Temp Score: 7.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 7.5
CNA Vector (juniper): 🔍

CVSSv2info

AVACAuCIA
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Resource consumption
CWE: CWE-400 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Junos OS 20.4R3-S10/21.2R3-S6/21.3R3-S5/21.4R3-S6/22.1R3-S4/22.2R3-S2/22.3R3-S1/22.4R3/23.2R2

Timelineinfo

06/25/2024 🔍
07/11/2024 +16 days 🔍
07/11/2024 +0 days 🔍
01/23/2026 +561 days 🔍

Sourcesinfo

Advisory: JSA83013
Status: Confirmed

CVE: CVE-2024-39551 (🔍)
GCVE (CVE): GCVE-0-2024-39551
GCVE (VulDB): GCVE-100-271170

Entryinfo

Created: 07/11/2024 19:29
Updated: 01/23/2026 23:58
Changes: 07/11/2024 19:29 (79), 01/23/2026 23:58 (2)
Complete: 🔍
Cache ID: 216::103

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