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Category:   Application (Generic)  >   ntp Vendors:   ntp.org
(NetBSD Issues Fix) ntp crypto_recv() Autokey Stack Overflow Lets Remote Users Execute Arbitrary Code
SecurityTracker Alert ID:  1022486
SecurityTracker URL:  http://securitytracker.com/id/1022486
CVE Reference:   CVE-2009-1252   (Links to External Site)
Date:  Jul 1 2009
Impact:   Execution of arbitrary code via network, User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): prior to 4.2.4p7, and 4.2.5 prior to 4.2.5p74
Description:   A vulnerability was reported in ntp. A remote user can execute arbitrary code on the target system.

A remote user can send specially crafted data to the target ntpd server to trigger a stack overflow and execute arbitrary code on the target system. The code will run with the privileges of the target ntpd service.

Systems compiled with OpenSSL support and configured to use autokey are affected.

The vulnerability resides in 'ntpd/ntp_crypto.c'.

The original advisory is available at:

http://www.kb.cert.org/vuls/id/853097

Harland Stenn of isc.org and Chis Ries of CMU reported this vulnerability.

Impact:   A remote user can execute arbitrary code on the target system.
Solution:   NetBSD has issued a fix.

The NetBSD advisory is available at:

http://ftp.NetBSD.org/pub/NetBSD/security/advisories/NetBSD-SA2009-006.txt.asc

Vendor URL:  www.ntp.org/ (Links to External Site)
Cause:   Boundary error
Underlying OS:  UNIX (NetBSD)
Underlying OS Comments:  4.0, 4.0.1, 5.0

Message History:   This archive entry is a follow-up to the message listed below.
May 18 2009 ntp crypto_recv() Autokey Stack Overflow Lets Remote Users Execute Arbitrary Code



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