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AUSCERT External Security Bulletin Redistribution
ESB-2024.2215
2024-04 Security Bulletin: Junos OS: MX Series and EX9200-15C: Stack-based
buffer overflow in aftman (CVE-2024-30401)
11 April 2024
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AusCERT Security Bulletin Summary
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Product: Junos OS
Publisher: Juniper Networks
Operating System: Juniper
Resolution: Patch/Upgrade
CVE Names: CVE-2024-30401
Original Bulletin:
https://supportportal.juniper.net/s/article/2024-04-Security-Bulletin-Junos-OS-MX-Series-and-EX9200-15C-Stack-based-buffer-overflow-in-aftman-CVE-2024-30401
Comment: CVSS (Max): 5.9 CVE-2024-30401 (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H)
CVSS Source: Juniper Networks
Calculator: https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
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Article ID: JSA79110
Product Affected: This issue affects Junos OS 21.2, 21.4, 22.1, 22.2. Affected
platforms: MX Series, EX9200-15C.
Severity Level: Medium
CVSS Score: CVSS 3.1
Problem:
An Out-of-bounds Read vulnerability in the advanced forwarding management
process aftman of Juniper Networks Junos OS on MX Series with MPC10E, MPC11,
MX10K-LC9600 line cards, MX304, and EX9200-15C, may allow an attacker to
exploit a stack-based buffer overflow, leading to a reboot of the FPC.
Through code review, it was determined that the interface definition code for
aftman could read beyond a buffer boundary, leading to a stack-based buffer
overflow.
This issue affects Junos OS on MX Series and EX9200-15C:
o from 21.2 before 21.2R3-S1,
o from 21.4 before 21.4R3,
o from 22.1 before 22.1R2,
o from 22.2 before 22.2R2;
This issue does not affect:
o All versions of Junos OS before 20.3R1;
o Any version of Junos OS 20.4.
Solution:
The following software releases have been updated to resolve this specific
issue: Junos OS: 21.2R3-S1, 21.4R3, 22.1R2, 22.2R2, 22.3R1, and all subsequent
releases.
This issue is being tracked as 1670609 which is visible on the Customer Support
website.
Note: Juniper SIRT's policy is not to evaluate releases which are beyond End of
Engineering (EOE) or End of Life (EOL).
Workaround:
There are no known workarounds for this issue.
Modification History:
o 2024-04-10 - Initial Publication
Related Information:
o KB16613: Overview of the Juniper Networks SIRT Quarterly Security Bulletin
Publication Process
o KB16765: In which releases are vulnerabilities fixed?
o KB16446: Common Vulnerability Scoring System (CVSS) and Juniper's Security
Advisories
o Report a Security Vulnerability - How to Contact the Juniper Networks
Security Incident Response Team
o supportportal.juniper.net/JSA79110
o https://www.cve.org/CVERecord?id=CVE-2024-30401
Last Updated: 2024-04-10
Created: 2024-04-10
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