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Category:   Application (VPN)  >   OpenSSL Vendors:   OpenSSL.org
(Ubuntu Issues Fix) OpenSSL Multiple Bugs Let Remote Users Cause the Target Application to Crash
SecurityTracker Alert ID:  1037751
SecurityTracker URL:  http://securitytracker.com/id/1037751
CVE Reference:   CVE-2016-7055   (Links to External Site)
Date:  Jan 31 2017
Impact:   Denial of service via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): prior to 1.0.2, 1.1.0 and later
Description:   Several vulnerabilities were reported in OpenSSL. A remote user can cause the target application to crash.

A remote user can send specially crafted payloads via a TLS connection using *-CHACHA20-POLY1305 ciphersuites to trigger a heap overflow and cause OpenSSL to crash [CVE-2016-7054]. Versions 1.1.0 and later are affected.

Robert Swiecki (Google Security Team) reported this vulnerability.

A remote user can send data with specially crafted cryptographic message syntax (CMS) structures to trigger a null pointer dereference in the processing of invalid encodings in the ASN.1 'CHOICE' type and cause the application using OpenSSL to crash [CVE-2016-7053].

Tyler Nighswander of ForAllSecure reported this vulnerability.

An error may occur in a Broadwell-specific Montgomery multiplication procedure on certain length data [CVE-2016-7055]. A remote user can send specially crafted data in certain cases to trigger errors in public-key operations in configurations where multiple remote clients select an affected EC algorithm and where the target server shares a private key between the multiple clients [which is not a default configuration]. Transient authentication and key negotiation failures may also occur. Versions prior to 1.0.2 are not affected.

Richard Morgan reported this vulnerability.

Impact:   A remote user can cause the target application using OpenSSL to crash.
Solution:   Ubuntu has issued a fix for CVE-2016-7055.

The Ubuntu advisory is available at:

http://www.ubuntu.com/usn/usn-3181-1

Vendor URL:  www.ubuntu.com/usn/usn-3181-1 (Links to External Site)
Cause:   Access control error, Boundary error, State error
Underlying OS:  Linux (Ubuntu)
Underlying OS Comments:  12.04 LTS, 14.04 LTS, 16.04 LTS, 16.10

Message History:   This archive entry is a follow-up to the message listed below.
Nov 10 2016 OpenSSL Multiple Bugs Let Remote Users Cause the Target Application to Crash



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