A light week.
@RISK is the SANS community's consensus bulletin summarizing the most important vulnerabilities and exploits identified during the past week and providing guidance on appropriate actions to protect your systems (PART I). It also includes a comprehensive list of all new vulnerabilities discovered in the past week (PART II).
********************* Sponsored By Sourcefire, Inc. *********************
Your Network Security Isn't Good Enough Anymore
Today's threats-and networks-are dynamic. Unfortunately most network security systems are not.
Join Martin Roesch, Founder and CTO of Sourcefire® and Creator of Snort®, in a series of seminars, as he shows why network security must include full network visibility, relevant context, and automated impact assessment to be effective.
More information http://www.sans.org/info/43769
*************************************************************************
TRAINING UPDATE - - SANSFIRE in Baltimore 6/13-6/20 (24 long courses, 12 short courses) http://www.sans.org/sansfire09/event.php - - Pen Testing and Web Application Attack Summit - June 1-2 http://www.sans.org/pentesting09_summit - - Rocky Mountain SANS, July 7-13 (6 full-length hands-on courses) http://www.sans.org/rockymnt2009/event.php - - SANS Boston, Aug 2-9 (6 full-length hands-on courses) https://www.sans.org/boston09/index.php - - National Forensiscs Summit, July 6-14 http://www.sans.org/forensics09_summit/ Looking for training in your own community? http://sans.org/community/ Save 25% on all On-Demand training (30 full courses) - See samples at http://www.sans.org/ondemand/spring09.php Plus Amsterdam, London, Dubai, Riyahd, Cairo, Melbourne, Canberra, and Singapore all in the next 90 days. For a list of all upcoming events, on-line and live: www.sans.org
*************************************************************************
Part I for this issue has been compiled by Rohan Kotian at TippingPoint, a division of 3Com, as a by-product of that company's continuous effort to ensure that its intrusion prevention products effectively block exploits using known vulnerabilities. TippingPoint's analysis is complemented by input from a council of security managers from twelve large organizations who confidentially share with SANS the specific actions they have taken to protect their systems. A detailed description of the process may be found at http://www.sans.org/newsletters/cva/#process
Description: Microsoft Internet Information Services (IIS), a set of Internet-based services for servers created by Microsoft, has security bypass vulnerability. The specific flaw lies in the WebDAV plug-in of the affected IIS servers, since it does not handle unicode tokens within the requested URL properly. This can be used to bypass authentication mechanism of password protected files with an HTTP request that has Unicode-encoded characters in the URI and a "Translate: f" header. This can also be used to list, download, upload and modify files from or to a WebDAV folder through PROPFIND requests containing Unicode-encoded characters. Technical details about the vulnerability are publicly available.
Status: Vendor confirmed, no updates available.
Description: Network Time Protocol (NTP) is a protocol used to synchronize the date and time of computers over a network. ntpd, an NTOP daemon, has a buffer overflow vulnerability when compiled with OpenSSL support and configured to use Autokey, which can be enabled via "crypto pw password" line in the "ntp.conf" file. The specific flaw is a buffer overflow error caused by the use of an insecure sprintf()" call in the "crypto_recv()" function in "ntpd/ntp_crypto.c". Successful exploitation might allow an attacker to either crash the system or execute arbitrary code with the privileges of the ntpd daemon.
Status: Vendor confirmed, updates available.
Description: Libsndfile is a C library for reading and writing files that contain sampled sound through one standard library interface. It has got two vulnerabilities which can be exploited to compromise an application using the affected library. The first is a buffer overflow error in "voc_read_header()" function in src/voc.c. A specially crafted Creative Voice (VOC) media file can be used to leverage this vulnerability and cause a heap-based buffer overflow. The second is a buffer overflow error in "aiff_read_header()" function in src/aiff.c. A specially crafted AIFF file can be used to exploit this vulnerability. Winamp, a popular media player, uses this library and hence is also affected by these vulnerabilities. Technical details are publicly available for these vulnerabilities.
Status: Vendor confirmed, updates available.
Description: D-Link MPEG4 Viewer ActiveX Control (csviewer.ocx) is used for remote management of D-Link Network Cameras via Web Browser. It has got two buffer overflow vulnerabilities in the "SetFilePath()" and "SetClientCookie()" methods. An overlong string argument to one these two methods might result in heap-based buffer overflow condition. A malicious web page that instantiated this control could exploit this buffer overflow to execute arbitrary code with the privileges of the current user.
Status: Vendor has not confirmed, no updates available. Users can mitigate the impact of this vulnerability by disabling the control via Microsoft's "kill bit" mechanism.
This list is compiled by Qualys ( www.qualys.com ) as part of that company's ongoing effort to ensure its vulnerability management web service tests for all known vulnerabilities that can be scanned. As of this week Qualys scans for 7030 unique vulnerabilities. For this special SANS community listing, Qualys also includes vulnerabilities that cannot be scanned remotely.
(c) 2009. All rights reserved. The information contained in this newsletter, including any external links, is provided "AS IS," with no express or implied warranty, for informational purposes only. In some cases, copyright for material in this newsletter may be held by a party other than Qualys (as indicated herein) and permission to use such material must be requested from the copyright owner.
Subscriptions: @RISK is distributed free of charge by the SANS Institute to people responsible for managing and securing information systems and networks. You may forward this newsletter to others with such responsibility inside or outside your organization.