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Category:   Device (Encryption/VPN)  >   Pulse Connect Secure (formerly Juniper Pulse Secure) Vendors:   Pulse Secure
(Pulse Secure Issues Fix for Pulse Connect Secure) OpenSSL SSL3_AL_WARNING Alert Processing Flaw Lets Remote Users Consume Excessive CPU Resources on the Target System
SecurityTracker Alert ID:  1039241
SecurityTracker URL:  http://securitytracker.com/id/1039241
CVE Reference:   CVE-2016-8610   (Links to External Site)
Date:  Aug 29 2017
Impact:   Denial of service via network
Fix Available:  Yes  Vendor Confirmed:  Yes  Exploit Included:  Yes  

Description:   A vulnerability was reported in OpenSSL. A remote user can consume excessive CPU resources on the target system. Pulse Connect Secure is affected.

The ssl3_read_bytes() function in 'ssl/s3_pkt.c' does not properly handle certain packets. A remote user can send a flood of SSL3_AL_WARNING alerts during the SSL handshake to consume excessive CPU resources on the target system. As a result, services that use the OpenSSL library may become unavailable for the duration of the packet flood.

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

Impact:   A remote user can consume excessive CPU resources on the target system.
Solution:   Pulse Secure has issued a fix for CVE-2016-8610 for Pulse Connect Secure (8.1R12, 8.2R7, 8.3R1).

The Pulse Secure advisory is available at:

https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA40886

Vendor URL:  kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA40886 (Links to External Site)
Cause:   State error

Message History:   This archive entry is a follow-up to the message listed below.
Oct 24 2016 OpenSSL SSL3_AL_WARNING Alert Processing Flaw Lets Remote Users Consume Excessive CPU Resources on the Target System



 Source Message Contents

Subject:  https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA40886

 
 


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