Juniper Junos OS up to 22.4R2 on ACX Packet Forwarding Engine missing synchronization

CVSS Meta Temp Score
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CTI Interest Score
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6.3$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in Juniper Junos OS up to 22.4R2 on ACX. This impacts an unknown function of the component Packet Forwarding Engine. The manipulation leads to missing synchronization. This vulnerability is referenced as CVE-2024-30387. The attack needs to be initiated within the local network. No exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Juniper Junos OS up to 22.4R2 on ACX and classified as critical. This issue affects an unknown functionality of the component Packet Forwarding Engine. The manipulation with an unknown input leads to a missing synchronization vulnerability. Using CWE to declare the problem leads to CWE-820. The product utilizes a shared resource in a concurrent manner but does not attempt to synchronize access to the resource. Impacted is availability. The summary by CVE is:

A Missing Synchronization vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS on ACX5448 and ACX710 allows an unauthenticated, adjacent attacker to cause a Denial-of-Service (DoS). If an interface flaps while the system gathers statistics on that interface, two processes simultaneously access a shared resource which leads to a PFE crash and restart. This issue affects Junos OS: All versions before 20.4R3-S9, 21.2 versions before 21.2R3-S5,  21.3 versions before 21.3R3-S5,  21.4 versions before 21.4R3-S4, 22.1 versions before 22.1R3-S2, 22.2 versions before 22.2R3-S2, 22.3 versions before 22.3R2-S2, 22.3R3, 22.4 versions before 22.4R2.

It is possible to read the advisory at supportportal.juniper.net. The identification of this vulnerability is CVE-2024-30387 since 03/26/2024. The exploitation is known to be easy. The attack can only be done within the local network. No form of authentication is needed for a successful exploitation. The technical details are unknown and an exploit is not publicly available.

Upgrading to version 20.4R3-S9, 21.2R3-S5, 21.3R3-S5, 21.4R3-S4, 22.1R3-S2, 22.2R3-S2, 22.3R2-S2, 22.3R3, 22.4R2 or 22.4R3 eliminates this vulnerability.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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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: 6.5
VulDB Meta Temp Score: 6.3

VulDB Base Score: 6.5
VulDB Temp Score: 6.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 6.5
CNA Vector (Juniper Networks, Inc.): 🔍

CVSSv2info

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

Exploitinginfo

Class: Missing synchronization
CWE: CWE-820 / CWE-821
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Partially

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-S9/21.2R3-S5/21.3R3-S5/21.4R3-S4/22.1R3-S2/22.2R3-S2/22.3R2-S2/22.3R3/22.4R2/22.4R3

Timelineinfo

03/26/2024 🔍
04/12/2024 +16 days 🔍
04/12/2024 +0 days 🔍
02/07/2025 +301 days 🔍

Sourcesinfo

Vendor: juniper.net

Advisory: JSA79187
Status: Confirmed

CVE: CVE-2024-30387 (🔍)
GCVE (CVE): GCVE-0-2024-30387
GCVE (VulDB): GCVE-100-260555

Entryinfo

Created: 04/12/2024 17:52
Updated: 02/07/2025 04:48
Changes: 04/12/2024 17:52 (65), 05/22/2024 09:04 (1), 02/07/2025 04:48 (14)
Complete: 🔍
Cache ID: 216::103

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