Access Restriction Bypass Affecting qemu package, versions <2.0.0+dfsg-2ubuntu1.13


Severity

Recommended
medium

Based on Ubuntu security rating

    Threat Intelligence

    EPSS
    2.06% (90th percentile)

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  • Snyk ID SNYK-UBUNTU1404-QEMU-427681
  • published 3 Jun 2015
  • disclosed 3 Jun 2015

How to fix?

Upgrade Ubuntu:14.04 qemu to version 2.0.0+dfsg-2ubuntu1.13 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream qemu package and not the qemu package as distributed by Ubuntu. See How to fix? for Ubuntu:14.04 relevant fixed versions and status.

Xen 3.3.x through 4.5.x does not properly restrict access to PCI MSI mask bits, which allows local x86 HVM guest users to cause a denial of service (unexpected interrupt and host crash) via unspecified vectors.

CVSS Scores

version 3.1
Expand this section

NVD

7.5 high
  • Attack Vector (AV)
    Network
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    None
  • User Interaction (UI)
    None
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    None
  • Integrity (I)
    None
  • Availability (A)
    High