QEMU drive_init function security bypass

qemu-driveinit-security-bypass (42268) The risk level is classified as MediumMedium Risk

Description:

QEMU could allow a local attacker to bypass security restrictions caused by an error in the drive_init function. By writing a header to a raw formatted disk image that specifies another image format, an attacker on a guest instance could exploit this vulnerability to read arbitrary files on the host.

*CVSS:

Base Score: 2.1
  Access Vector: Local
  Access Complexity: Low
  Authentication: None
  Confidentiality Impact: Partial
  Integrity Impact: None
  Availability Impact: None
 
Temporal Score: 1.6
  Exploitability: Unproven
  Remediation Level: Official-Fix
  Report Confidence: Confirmed

Consequences:

Bypass Security

Remedy:

Refer to the QEMU SVN repository for patch, upgrade or suggested workaround information. See References.

References:

Platforms Affected:

  • Canonical Ubuntu 8.04 LTS
  • Canonical Ubuntu 8.10
  • Fabrice Bellard QEMU 0.9.1
  • MandrakeSoft Mandrake Linux 2008.0 X86_64
  • MandrakeSoft Mandrake Linux 2008.0
  • MandrakeSoft Mandrake Linux 2008.1 X86_64
  • MandrakeSoft Mandrake Linux 2008.1
  • RedHat Enterprise Linux 5
  • RedHat Enterprise Linux 5 Client
  • RedHat Enterprise Linux 5.1.z EUS
  • RedHat RHEL Desktop Multi OS 5 Client
  • RedHat RHEL Virtualization 5 Server
  • RedHat RHEL Virtualization 5.1.z EUS

Reported:

Apr 28, 2008

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