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             AUSCERT External Security Bulletin Redistribution

   Junos OS Evolved: PTX Series: An attacker can cause a kernel panic by
       sending a malformed TCP packet to the device (CVE-2022-22192)
                              8 November 2022


        AusCERT Security Bulletin Summary

Product:           Junos OS Evolved
Publisher:         Juniper Networks
Operating System:  Juniper
Resolution:        Patch/Upgrade
CVE Names:         CVE-2022-22192  

Original Bulletin: 

Comment: CVSS (Max):  7.5 CVE-2022-22192 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
         CVSS Source: NVD
         Calculator:  https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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Article ID:       JSA69915

Product Affected: This issue affects Junos OS Evolved 20.4-EVO, 21.3-EVO, 
21.4-EVO, 22.1-EVO. Affected platforms: PTX10004, PTX10008, PTX10016.

Severity Level:   High

CVSS Score:       7.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)


An Improper Validation of Syntactic Correctness of Input vulnerability in the 
kernel of Juniper Networks Junos OS Evolved on PTX series allows a 
network-based, unauthenticated attacker to cause a Denial of Service (DoS).

When an incoming TCP packet destined to the device is malformed there is a 
possibility of a kernel panic. Only TCP packets destined to the ports for BGP, 
LDP and MSDP can trigger this.

This issue only affects PTX10004, PTX10008, PTX10016. No other PTX Series 
devices or other platforms are affected.

This issue affects Juniper Networks Junos OS Evolved:

    20.4-EVO versions prior to 20.4R3-S4-EVO;
    21.3-EVO versions prior to 21.3R3-EVO;
    21.4-EVO versions prior to 21.4R3-EVO;
    22.1-EVO versions prior to 22.1R2-EVO.

This issue does not affect Juniper Networks Junos OS Evolved versions prior to 

Juniper SIRT is not aware of any malicious exploitation of this vulnerability.

This issue was seen during production usage.

This issue has been assigned CVE-2022-22192.


The following Junos OS Evolved software releases have been updated to resolve 
this specific issue: 20.4R3-S4-EVO, 21.4R3-EVO, 22.1R2-EVO, 22.2R1-EVO, and all 
subsequent releases.

This issue is being tracked as 1663201 which is visible on the Customer Support 

Note: Juniper SIRT's policy is not to evaluate releases which are beyond End of 
Engineering (EOE) or End of Life (EOL).

Software Releases, patches and updates are available at 


There are no known workarounds for this issue.

Severity Assessment:
Information for how Juniper Networks uses CVSS can be found at KB 16446 "Common 
Vulnerability Scoring System (CVSS) and Juniper's Security Advisories."

Modification History:
2022-10-12: Initial Publication
Related Information:

    KB16613: Overview of the Juniper Networks SIRT Quarterly Security Bulletin 
Publication Process
    KB16765: In which releases are vulnerabilities fixed?
    KB16446: Common Vulnerability Scoring System (CVSS) and Juniper's Security 
    Report a Security Vulnerability - How to Contact the Juniper Networks 
Security Incident Response Team

Last Updated: 2022-10-12
Created:      2022-10-12

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