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Category:   Device (Router/Bridge/Hub)  >   Juniper Junos Vendors:   Juniper
(Juniper Issues Fix for Juniper Junos) OpenSSH Key Exchange Initialization Bug in kex_input_kexinit() Lets Remote Users Consume Excessive Memory Resources
SecurityTracker Alert ID:  1040188
SecurityTracker URL:  http://securitytracker.com/id/1040188
CVE Reference:   CVE-2016-8858   (Links to External Site)
Date:  Jan 15 2018
Impact:   Denial of service via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 12.3X48, 15.1, 15.1X49, 15.1X53, 16.1, 16.2
Description:   A vulnerability was reported in OpenSSH. A remote user can consume excessive memory on the target system. Juniper Junos is affected.

A remote user can send specially crafted data during the key exchange process to trigger a flaw in kex_input_kexinit() and consume excessive memory on the target system. This can be exploited to consume up to 384 MB per connection.

Shi Lei from Gear Team, Qihoo 360 Inc., reported this vulnerability.

Impact:   A remote user can consume excessive memory resources on the target system.
Solution:   The Juniper has issued a fix (12.3X48-D65, 15.1R5-S6, 15.1R7, 15.1X49-D121, 16.1R4-S6, 16.1R5, 16.2R2, 17.1R1, 17.2R1).

The Juniper advisory is available at:

https://kb.juniper.net/InfoCenter/index?page=content&id=JSA10837

Vendor URL:  kb.juniper.net/InfoCenter/index?page=content&id=JSA10837 (Links to External Site)
Cause:   State error

Message History:   This archive entry is a follow-up to the message listed below.
Oct 19 2016 OpenSSH Key Exchange Initialization Bug in kex_input_kexinit() Lets Remote Users Consume Excessive Memory Resources



 Source Message Contents

Subject:  https://kb.juniper.net/InfoCenter/index?page=content&id=JSA10837

 
 


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