@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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PART I Critical Vulnerabilities Part I for this issue has been compiled by Josh Bronson at TippingPoint, a division of HP, 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/risk/#process
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Description: As part of its Patch Tuesday program, Microsoft has released patches addressing vulnerabilities in multiple products. The vulnerabilities include multiple issues with Internet Explorer (IE): a race condition when handling DOM objects, an unspecified error in IE's handling of telnet URIs, and a use-after-free vulnerability in IE's XSLT engine and its code handling of style objects. In addition, a pwn2own exploit against Internet Explorer has been released. It relies on an error in Internet Explorer's sandboxing code, allowing an attacker to run code in a file with escalated ("Medium Integrity") privileges. By enticing a target to view a malicious page, an attacker can exploit these vulnerabilities in order to execute arbitrary code on the target's machine. Two input validation vulnerabilities in Microsoft Visio are exploitable in a similar way, except that an attacker must entice a target to open a malicious file. A memory corruption vulnerability in DNS can be exploited by sending a malicious query to a vulnerable server. This can allow the attacker to execute arbitrary code with SYSTEM-level privileges on the target machine. Microsoft notes that prior to sending the malicious request, an attacker must register a domain and create a Name Authority Pointer (NAPTR) DNS resource record.
Status: vendor confirmed, updates available
Description: Adobe has released patches for unspecified vulnerabilities in Adobe Flash Player and Adobe Shockwave player. The issues include multiple unspecified memory corruption vulnerabilities, buffer overflows, and integer overflows. By enticing a target to view a malicious site, an attacker can exploit these vulnerabilities in order to execute arbitrary code on the target's machine.
Status: vendor confirmed, updates available
Description: Google has released Chrome 13, which contains patches for multiple security vulnerabilities in its Chrome web browser. The problems include fourteen vulnerabilities rated "High," including stale-pointer, use-after-free, and cross-origin vulnerabilities. By enticing a target to view a malicious page, an attacker can exploit these vulnerabilities in order to execute arbitrary code on thet target's machine.
Status: vendor confirmed, updates available
Description: Apple has released patches for its QuickTime multimedia player addressing multiple security vulnerabilities. The issues include integer overflow vulnerabilities in QuickTime's handling of the Sync Sample and Time-to-Sample atoms as well as unspecified memory corruption, integer overflow, and buffer overflow vulnerabilities. By enticing a target to open a malicious file, an attacker can exploit these vulnerabilities in order to execute arbitrary code on the target's machine.
Status: vendor confirmed, updates available
Part II -- Comprehensive List of Newly Discovered Vulnerabilities from Qualys (www.qualys.com) 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 12026 unique vulnerabilities. For this special SANS community listing, Qualys also includes vulnerabilities that cannot be scanned remotely. ______________________________________________________________________
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