More than 95 new vulnerabilities discovered this week - only one, in Veritas NetBackup, is critical. But notice, in Part II, cross-site scripting vulnerabilities abound. What will it take to get web developers to program securely?
Alan
@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).
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2) Security 508: System Forensics, Investigation & Response via SANS@Home starts April 19! http://www.sans.org/athome/details.php?id=1404 Also Security 506: Securing Unix/Linux led by the SANS System Administrators http://www.sans.org/athome/details.php?id=1431 See http://www.sans.org/athome/index.php for complete SANS@Home listings. PART I Critical Vulnerabilities
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Part I is compiled by Rohit Dhamankar 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: Veritas NetBackup software offers a backup and recovery solution for mid to large size enterprises. The backup server, as well as, client contains stack-based buffer overflows that can be triggered by sending specially crafted requests to the volume manager daemon (13701/tcp), the Catalog daemon (13721/tcp) or the Sharepoint services daemon (13724/tcp). The problem arises because user-supplied input is copied to the process stack without any bounds checking. The buffer overflows can be easily exploited to execute arbitrary code. The technical details required to craft an exploit have been publicly posted. If the backup software is installed on a large number of enterprise desktop systems (a typical configuration that enables users to back up their important data), the vulnerabilities can be leveraged to compromise a large number of systems.
Status: Veritas has released patches for all the affected software. A workaround is to block ports 13701/tcp, 13721/tcp and 13724/tcp at the network perimeter. The overflows in the backup software have been widely exploited during last year, and as a general security practice it is recommended to also block the other ports used by this software at the network perimeter. The list of ports is available here: http://seer.support.veritas.com/docs/279553.htm
Council Site Actions: More than half of the council sites are using the affected software. Most of these sites plan to deploy the patches during their next regularly scheduled system maintenance. One site commented that they just finished migrating to Legato and used this vulnerability as an excuse to turn the old system off. They had been running the old system. "just in case", off. Another site said that as a result of this vulnerability, they built a test server that same day in preparation for a full version upgrade of Veritas.
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 4955 unique vulnerabilities. For this special SANS community listing, Qualys also includes vulnerabilities that cannot be scanned remotely.
(c) 2006. 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.
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