CVE-2024-39516

/// Technical description

An Out-of-Bounds Read vulnerability in

the routing protocol daemon (rpd) of

Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated network-based attacker sending a specifically malformed BGP packet to cause rpd to crash and restart, resulting in a Denial of Service (DoS). Continued receipt and processing of this packet will create a sustained Denial of Service (DoS) condition.

This issue only affects systems configured in

either of two ways:

* systems with BGP traceoptions enabled

* systems with BGP traffic engineering

configured

This issue can affect iBGP and eBGP with

any address family

configured. The specific attribute involved is non-transitive, and will not propagate across a network.

This issue affects:

Junos OS: 

* All versions before 21.4R3-S8,

* 22.2 before 22.2R3-S5, 

* 22.3 before 22.3R3-S4, 

* 22.4 before 22.4R3-S3, 

* 23.2 before 23.2R2-S2, 

* 23.4 before 23.4R2; 

/// Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. 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.

/// References