It's Apple Mac OS-X and CA's backup product causing most of the big problems this week. 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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Part I for this issue has been compiled by Rob King 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: Apple Mac OS X contains multiple vulnerabilities addressed in this security update. The previously-discussed DNS flaw has been patched, as well as multiple vulnerabilities in the handling of PDF, Microsoft Office, graphics, and message files. Additionally, some remotely-exploitable flaws in third-party included software have been addressed. Various other flaws have been addressed, as well as various denial-of-service and local privilege escalation vulnerabilities.
Status: Vendor confirmed, updates available.
Description: CA ARCserve Backup is a popular enterprise backup solution. Part of its functionality is provided by a process, called "LGServer". This process contains a buffer overflow in its handling of user input. A specially crafted request to this service could trigger this buffer overflow. Successfully exploiting this buffer overflow would allow an attacker to execute arbitrary code with the privileges of the vulnerable process (often SYSTEM). Some technical details are publicly available for this vulnerability.
Status: Vendor confirmed, updates available.
Description: Blue Coat K9 Web Protector is a popular web proxying and filtering solution. It contains multiple buffer overflows in its handling of HTTP headers. A malicious web site that sends specially crafted HTTP headers could trigger one of these vulnerabilities, allowing an attacker to execute arbitrary code with the privileges of the vulnerable process. Some technical details are publicly available for these vulnerabilities.
Status: Vendor confirmed. A beta version of the software has been released that has fixed these vulnerabilities. A full update will be released in September of 2008.
Description: OpenVMS is HP's minicomputer operating system for VAX, Alpha, and Itanium architectures, and it widely deployed in industrial control, accounting, and timesharing systems. Its MultiNet networking package contains a server for the finger service. This service allows users to query the status of other users on remote systems. This server contains a buffer overflow vulnerability in its handling of usernames. An overlong username would trigger this buffer overflow, allowing an attacker to execute arbitrary code with the privileges of the vulnerable process. A simple proof-of-concept is publicly available for this vulnerability. As a note of historical interest, a flaw in the Unix implementation of the finger protocol was one of the vectors used by the infamous Morris worm, often considered the first true worm.
Status: Vendor has not confirmed, no updates available. Users are advised to disable the finger service if it is unnecessary.
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 5549 unique vulnerabilities. For this special SANS community listing, Qualys also includes vulnerabilities that cannot be scanned remotely.
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