CVE-2024-47493

6.5 · MEDIUM

Published Oct 11, 2024 juniper CWE-401 EPSS 0.37% (30th pctl) CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Overview

CVE-2024-47493 is a medium-severity vulnerability affecting juniper junos. It was published on October 11, 2024 and has a CVSS 3.1 base score of 6.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 6.5, rated MEDIUM. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical Description

A Missing Release of Memory after Effective Lifetime vulnerability in the Packet Forwarding Engine (PFE) of the Juniper Networks Junos OS on the MX Series platforms with Trio-based FPCs allows an unauthenticated, adjacent attacker to cause a Denial of Service (DoS).

In case of channelized Modular Interface Cards (MICs), every physical interface flap operation will leak heap memory. Over a period of time, continuous physical interface flap operations causes local FPC to eventually run out of memory and crash.

Below CLI command can be used to check the memory usage over a period of time:

user@host> show chassis fpc

Temp CPU Utilization (%) CPU Utilization (%) Memory

Utilization (%)

Slot State (C) Total Interrupt 1min 5min

15min DRAM (MB) Heap Buffer

Online 43 41

2 2048 49 14

Online 43 41

2048

Remediation

Check the references section for vendor advisories and patches from juniper. Update junos to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected Products

Vendor	Product	Versions	Status
juniper	junos	>= 0, < 21.2	Affected

References

Ref supportportal.juniper.net/ Ref www.juniper.net/documentation/us/en/software/junos/interfaces-link-multilink/topics/topic-map/link-multilink-services-understanding.html#id-multilink-interfaces-on-channelized-mics-overview

Frequently Asked Questions

What is CVE-2024-47493?

CVE-2024-47493 is a medium-severity vulnerability affecting juniper junos. It was published on October 11, 2024 and has a CVSS 3.1 base score of 6.5 (MEDIUM).

How severe is CVE-2024-47493?

This vulnerability has a CVSS 3.1 base score of 6.5, rated MEDIUM. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2024-47493?

How can CyberStrike help with CVE-2024-47493?

CyberStrike's AI-powered security agents can automatically detect CVE-2024-47493 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.

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