SecurityTracker.com
    Home    |    View Topics    |    Search    |    Contact Us    |   

SecurityTracker
Archives


 


Category:   Application (Generic)  >   ntp Vendors:   ntp.org
(Ubuntu Issues Fix) ntp Bugs Let Remote Users Deny Service, Obtain Potentially Sensitive Information, and Bypass Access Controls in Certain Cases
SecurityTracker Alert ID:  1031752
SecurityTracker URL:  http://securitytracker.com/id/1031752
CVE Reference:   CVE-2014-9750, CVE-2014-9751   (Links to External Site)
Date:  Feb 17 2015
Impact:   Denial of service via network, Disclosure of system information, Disclosure of user information
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): prior to 4.2.8p1
Description:   Two vulnerabilities were reported in ntp. A remote user can cause denial of service conditions. A remote user can obtain potentially sensitive information. A remote user can bypass access controls in certain cases.

A remote user can send a specially crafted 'vallen' parameter value to trigger a validation flaw in 'ntp_crypto.c' and obtain potentially sensitive information or cause the target ntpd service to crash [CVE-2014-9750].

Stephen Roettger of the Google Security Team, Sebastian Krahmer of the SUSE Security Team, and Harlan Stenn of Network Time Foundation reported this vulnerability.

A remote user may be able to spoof the ::1 source address via IPv6 to bypass IPv6-based access controls [CVE-2014-9751]. Some operating systems are affected, including Apple OS X and Linux.

Stephen Roettger of the Google Security Team reported this vulnerability.

Impact:   A remote user can cause denial of service conditions.

A remote user can obtain potentially sensitive information.

A remote user can bypass access controls in certain cases.

Solution:   Ubuntu has issued a fix.

The Ubuntu advisory is available at:

http://www.ubuntu.com/usn/usn-2497-1

Vendor URL:  support.ntp.org/bin/view/Main/SecurityNotice#vallen_is_not_validated_in_sever (Links to External Site)
Cause:   Access control error
Underlying OS:  Linux (Ubuntu)
Underlying OS Comments:  10.04 LTS, 12.04 LTS, 14.04 LTS, 14.10

Message History:   This archive entry is a follow-up to the message listed below.
Feb 16 2015 ntp Bugs Let Remote Users Deny Service, Obtain Potentially Sensitive Information, and Bypass Access Controls in Certain Cases



 Source Message Contents



[Original Message Not Available for Viewing]


Go to the Top of This SecurityTracker Archive Page





Home   |    View Topics   |    Search   |    Contact Us

This web site uses cookies for web analytics. Learn More

Copyright 2019, SecurityGlobal.net LLC