Details:
Symantec Security Advisory

SYM08-004

20 February, 2008
Veritas Storage Foundation for Windows by Symantec:  Denial of Service in Scheduler Service

Revision History
None

Severity
Low

Remote Access: Yes, Local network access normally required
Local Access: No
Authentication Required: No
Exploit publicly available: No

Overview
A Denial of Service (DoS) has been identified and resolved in the Veritas Storage Foundation for Windows v5.0 (SFW) Volume Manager Scheduler Service.    Successful exploitation results in a service halt requiring manual intervention by an administrator to restart the Scheduler Service.

Product(s) Affected

Product   Platform                       Solution(s)
SFW 5.0  Win2k, Win2003 32-bit    http://support.veritas.com/docs/297166  
SFW 5.0  Win2k, Win2003 64-bit    http://support.veritas.com/docs/297167  

Product(s) Not Affected
Product                                                       Version
Volume Manager                                           3.1
Veritas Storage Foundation for Windows        4.1, 4.1RP1
Veritas Storage Foundation for Windows        4.2, 4.2RP1, 4.2RP2
Veritas Storage Foundation for Windows        4.3, 4.3MP1, 4.3MP2

Details
iDefense Labs, notified Symantec of a DoS vulnerability discovered in the Veritas Storage Foundation for Windows Scheduler Service, VxSchedService.exe.  The Scheduler Service, newly introduced in Symantec's Veritas Storage Foundation for Windows v5.0, listens for incoming scheduling messages from client systems.  An attacker with network access could successfully pass malformed packets to the service causing it to run out of processing memory. The service halt requires manual intervention by an administrator to restart the service and re-enable scheduling activity.
This vulnerability, if successfully exploited, would most likely be initiated by a malicious user authenticated on or with access to the local network since the affected service port should not normally be available externally to the authorized network.

Symantec Response
Symantec takes the security of our products and our customers very seriously. Symantec engineers have verified and provided a fix for this issue in Symantec's Veritas Storage Foundation for Windows 5.0.

Symantec recommends customers apply the latest product update to enhance their security posture and protect against potential security threats of this nature.

Symantec knows of no exploitation of or adverse customer impact from this issue.

Best Practices
As part of normal best practices, Symantec strongly recommends:

Restrict access to administration or management systems to privileged users.

Restrict remote access, if required, to trusted/authorized systems only.

Run under the principle of least privilege where possible to limit the impact of exploit by threats.

Keep all operating systems and applications updated with the latest vendor patches.

Follow a multi-layered approach to security. Run both firewall and anti-malware applications, at a minimum, to provide multiple points of detection and protection to both inbound and outbound threats.

Deploy network and host-based intrusion detection systems to monitor network traffic for signs of anomalous or suspicious activity. This may aid in detection of attacks or malicious activity related to exploitation of latent vulnerabilities

Reference
The Common Vulnerabilities and Exposures (CVE) initiative has assigned CVE Candidate
CVE-2007-4516 to this issue.
This issue is a candidate for inclusion in the CVE list (http://cve.mitre.org), which standardizes names for security problems.
SecurityFocus has assigned Bugtraq ID BID 27440 to this issue for inclusion in the SecurityFocus vulnerability database.

Credit:
Symantec would like to thank iDefense Labs for reporting this issue and for providing full coordination while Symantec resolved it.

Related Documents:

297166:   Veritas Storage Foundation (tm) and High Availability Solutions for Windows 5.0 and Veritas Cluster Server for NetApp SnapMirror 5.0 Release Update 1 (RU1) Rollup Patch 1a (RP1a) 32 Bit
 http://support.veritas.com/docs/297166


297167:   Veritas Storage Foundation (tm) and High Availability Solutions for Windows 5.0 and Veritas Cluster Server for NetApp SnapMirror 5.0 Release Update 1 (RU1) Rollup Patch 1a (RP1a) 64 Bit
 http://support.veritas.com/docs/297167

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