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Category:   Application (VPN)  >   OpenSSL Vendors:   OpenSSL.org
(Ubuntu Issues Fix) OpenSSLX.509 IPAddressFamily Buffer Overread Lets Remote Users Cause Certificate Text to Be Displayed Incorrectly
SecurityTracker Alert ID:  1039739
SecurityTracker URL:  http://securitytracker.com/id/1039739
CVE Reference:   CVE-2017-3735   (Links to External Site)
Date:  Nov 6 2017
Impact:   Modification of user information
Fix Available:  Yes  Vendor Confirmed:  Yes  

Description:   A vulnerability was reported in OpenSSL. A remote user can cause the certificate text to be displayed incorrectly.

A remote user can create an X.509 certificate with a specially crafted IPAddressFamily extension data that, when displayed by the target user, will trigger a one byte overread and cause the certificate text to be displayed incorrectly.

The Google OSS-Fuzz project reported this vulnerability.

Impact:   A remote user can cause the certificate text to be displayed incorrectly.
Solution:   Ubuntu has issued a fix.

The Ubuntu advisory is available at:

https://www.ubuntu.com/usn/usn-3475-1

Vendor URL:  www.ubuntu.com/usn/usn-3475-1 (Links to External Site)
Cause:   Boundary error
Underlying OS:  Linux (Ubuntu)
Underlying OS Comments:  14.04 LTS, 16.04 LTS, 17.04, 17.10

Message History:   This archive entry is a follow-up to the message listed below.
Nov 2 2017 OpenSSLX.509 IPAddressFamily Buffer Overread Lets Remote Users Cause Certificate Text to Be Displayed Incorrectly



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