CVE-2024-39543

6.5 · MEDIUM

Published Jul 11, 2024 juniper CWE-120 EPSS 0.33% (26th pctl) CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Overview

CVE-2024-39543 is a medium-severity vulnerability affecting juniper junos. It was published on July 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 Buffer Copy without Checking Size of Input vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Juniper Networks Junos OS Evolved allows an unauthenticated, adjacent attacker to send specific RPKI-RTR packets resulting in a crash, creating a Denial of Service (DoS) condition. Continued receipt and processing of this packet will create a sustained Denial of Service (DoS) condition.

This issue affects

Junos OS:

* All versions before 21.2R3-S8,

* from 21.4 before 21.4R3-S8,

* from 22.2 before 22.2R3-S4,

* from 22.3 before 22.3R3-S3,

* from 22.4 before 22.4R3-S2,

* from 23.2 before 23.2R2-S1,

* from 23.4 before 23.4R2.

Junos OS Evolved: * All versions before 21.2R3-S8-EVO,

* from 21.4 before 21.4R3-S8-EVO,

* from 22.2 before 22.2R3-S4-EVO,

* from 22.3 before 22.3R3-S3-EVO,

* from 22.4 before 22.4R3-S2-EVO,

* from 23.2 before 23.2R2-S1-EVO,

* from 23.4 before 23.4R2-EVO.

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
juniper	junos_os_evolved	>= 0, < 21.2	Affected

References

Ref supportportal.juniper.net/JSA83004 Ref supportportal.juniper.net/JSA83004

Frequently Asked Questions

What is CVE-2024-39543?

CVE-2024-39543 is a medium-severity vulnerability affecting juniper junos. It was published on July 11, 2024 and has a CVSS 3.1 base score of 6.5 (MEDIUM).

How severe is CVE-2024-39543?

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-2024-39543?

How can CyberStrike help with CVE-2024-39543?

CyberStrike's AI-powered security agents can automatically detect CVE-2024-39543 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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HackBrowser

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