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Category:   Application (Security)  >   Cisco FireSIGHT Vendors:   Cisco
(Cisco Issues Advisory for Cisco FireSIGHT) OpenSSL Multiple Bugs Let Remote Users Cause the Target Service to Crash
SecurityTracker Alert ID:  1036926
SecurityTracker URL:  http://securitytracker.com/id/1036926
CVE Reference:   CVE-2016-6302, CVE-2016-6303, CVE-2016-6306   (Links to External Site)
Date:  Sep 29 2016
Impact:   Denial of service via network
Vendor Confirmed:  Yes  

Description:   Multiple vulnerabilities were reported in OpenSSL. A remote user can cause the target service or application to crash. Cisco FireSIGHT is affected.

A remote user can send a specially crafted SHA512 TLS session ticket to trigger an out-of-bounds memory read error and cause the target server to crash [CVE-2016-6302].

A remote user can trigger an integer overflow in the MDC2_Update() function in 'crypto/mdc2/mdc2dgst.c' and cause the target service to crash in certain cases [CVE-2016-6303].

A remote user can trigger an out-of-bounds memory read error in the processing of certain TLS/SSL protocol handshake messages and cause the target application or service to crash [CVE-2016-6306]. Version 1.1.0 is not affected.

A remote user can trigger a memory allocation error in tls_get_message_header() to temporarily consume excessive memory resources on the target system [CVE-2016-6307]. DTLS users are not affected. Version 1.1.0 is affected.

A remote user can trigger a memory allocation error in dtls1_preprocess_fragment() to temporarily consume excessive memory resources on the target system [CVE-2016-6308]. TLS users are not affected. Version 1.1.0 is affected.

Shi Lei (Gear Team, Qihoo 360 Inc.) reported these vulnerabilities.

Impact:   A remote user can cause the target service or application to crash.
Solution:   Cisco has issued an advisory for CVE-2016-6302, CVE-2016-6303, and CVE-2016-6306 for Cisco FireSIGHT.

The Cisco advisory is available at:

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160927-openssl

Vendor URL:  tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160927-openssl (Links to External Site)
Cause:   Access control error, Boundary error, Resource error

Message History:   This archive entry is a follow-up to the message listed below.
Sep 23 2016 OpenSSL Multiple Bugs Let Remote Users Cause the Target Service to Crash



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