Bochs floppy disk controller denial of service

bochs-floppy-disk-dos (34513) The risk level is classified as MediumMedium Risk

Description:

Bochs is vulnerable to a denial of service, caused by a divide-by-zero error in the emulated floppy disk controller. A local attacker could exploit this vulnerability to stop the bochs process, resulting in a denial of service.

*CVSS:

Base Score: 2.5
  Access Vector: Local
  Access Complexity: Low
  Authentication: Not Required
  Confidentiality Impact: None
  Integrity Impact: None
  Availability Impact: Partial
 
Temporal Score: 1.8
  Exploitability: Unproven
  Remediation Level: Official-Fix
  Report Confidence: Confirmed

Consequences:

Denial of Service

Remedy:

For Gentoo Linux (bochs):
Refer to GLSA 200711-21 for patch, upgrade, or suggested workaround information. See References.

References:

  • boch's Web site: bochs: The Open Source IA-31 Emulation Project (Home Page).
  • Tavis Ormandy White paper: An Empirical Study into the Security Exposures to Hosts of Hostile Virtualized Environments.
  • BID-24246: Bochs Buffer Overflow and Denial Of Service Vulnerabilities
  • CVE-2007-2894: The emulated floppy disk controller in Bochs 2.3 allows local users of the guest operating system to cause a denial of service (virtual machine crash) via unspecified vectors, resulting in a divide-by-zero error.
  • GLSA-200711-21: Bochs: Multiple vulnerabilities
  • OSVDB ID: 42119: Bochs Emulated Floppy Disk Controller Unspecified Divide-By-Zero Local DoS
  • SA25470: Bochs NE2000 RX Frame Overflow and Disk Controller Denial of Service
  • VUPEN/ADV-2007-1936: Bochs NE2000 RX Frame Heap Overflow and Floppy Disk Controller DoS Vulnerabilities

Platforms Affected:

  • Bochs Project Bochs 2.3 and prior
  • Gentoo Linux

Reported:

May 01, 2007

The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall the author/distributor (IBM Internet Security Systems X-Force) be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.

For corrections or additions please email ignore thisxforceignore this@ignore thisus.ignore thisibm.comignore this

Return to the main page

* According to the Forum of Incident Response and Security Teams (FIRST), the Common Vulnerability Scoring System (CVSS) is an "industry open standard designed to convey vulnerability severity and help to determine urgency and priority of response." IBM PROVIDES THE CVSS SCORES "AS IS" WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY.
The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.

About IBM Internet Security Systems

IBM Internet Security Systems is a trusted security advisor to thousands of the world's leading businesses and governments, helping to provide pre-emptive protection for networks, desktops and servers. The IBM Proventia? integrated security platform is designed to automatically protect against both known and unknown threats, helping to keep networks up and running and shield customers from online attacks before they impact business assets. IBM Internet Security Systems products and services are based on the proactive security intelligence of its X-Force? research and development team ? an unequivocal world authority in vulnerability and threat research. The IBM Internet Security Systems product line is also complemented by comprehensive Managed Security Services and Professional Security Services. For more information, visit the IBM Internet Security Systems Web site at www.iss.net or call 800-776-2362.