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Category:   Device (Router/Bridge/Hub)  >   Juniper Junos Vendors:   Juniper
Juniper Junos TCP Reassembly Algorithm Lets Remote Users Consume Excessive CPU Resources on the Target System
SecurityTracker Alert ID:  1041434
SecurityTracker URL:  http://securitytracker.com/id/1041434
CVE Reference:   CVE-2018-5390   (Links to External Site)
Date:  Aug 8 2018
Impact:   Denial of service via network
Vendor Confirmed:  Yes  

Description:   A vulnerability was reported in Juniper Junos. A remote user can consume excessive CPU resources on the target system.

The system uses an inefficient TCP reassembly algorithm. A remote user can send specially crafted data via an established TCP connection to consume excessive CPU resources on the target routing engine running Junos.

The following platforms are affected:

MX Series (MX80, MX480 tested)
QFX Series (QFX5100, QFX5200, QFX10008 tested)
NFX Series (NFX150, NFX250 tested)
PTX Series (PTX10008 tested)
vMX, vSRX, vQFX, vPTX, ...

Other platforms may be affected.

Juha-Matti Tilli (Aalto University, Department of Communications and Networking / Nokia Bell Labs) reported this vulnerability.

Impact:   A remote user can consume excessive CPU resources on the target system.
Solution:   The vendor has issued an advisory. Some workarounds are described in the advisory.

The vendor advisory is available at:

https://kb.juniper.net/InfoCenter/index?page=content&id=JSA10876

Vendor URL:  kb.juniper.net/InfoCenter/index?page=content&id=JSA10876 (Links to External Site)
Cause:   Resource error

Message History:   None.


 Source Message Contents

Subject:  https://kb.juniper.net/InfoCenter/index?page=content&id=JSA10876

 
 


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