Main Vulnerability Database SB2024041112

SB2024041112 - Null pointer dereference in Junos OS Evolved

Published: April 11, 2024

Security Bulletin ID SB2024041112

CSH Severity

Medium

Patch available

YES

Number of vulnerabilities 1

Exploitation vector Adjecent network

Highest impact Denial of service

Breakdown by Severity

Low
Medium
High
Critical

Description

This security bulletin contains information about 1 vulnerability.

1) Null pointer dereference (CVE-ID: CVE-2024-30403)

CWE-ID: CWE-476 - NULL Pointer Dereference

CVSSv4: CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green

The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to null pointer dereference error in the Packet Forwarding Engine (PFE). A remote non-authenticated attacker can cause a Denial of Service (DoS).

When Layer 2 traffic is sent through a logical interface, MAC learning happens.

If during this process, the interface flaps, an Advanced Forwarding Toolkit manager (evo-aftmand-bt) core is observed.

Remediation

Install update from vendor's website.

References

https://supportportal.juniper.net/s/article/2024-04-Security-Bulletin-Junos-OS-Evolved-When-MAC-learning-happens-and-an-interface-gets-flapped-the-PFE-crashes-CVE-2024-30403