Off-by-one Error Affecting qemu package, versions <1:2.11+dfsg-1ubuntu7.39


Severity

Recommended
low

Based on Ubuntu security rating

    Threat Intelligence

    EPSS
    0.05% (15th percentile)

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  • Snyk ID SNYK-UBUNTU1804-QEMU-1912821
  • published 8 Nov 2021
  • disclosed 18 Feb 2022

How to fix?

Upgrade Ubuntu:18.04 qemu to version 1:2.11+dfsg-1ubuntu7.39 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:18.04 relevant fixed versions and status.

An off-by-one error was found in the SCSI device emulation in QEMU. It could occur while processing MODE SELECT commands in mode_sense_page() if the 'page' argument was set to MODE_PAGE_ALLS (0x3f). A malicious guest could use this flaw to potentially crash QEMU, resulting in a denial of service condition.

CVSS Scores

version 3.1
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NVD

6.5 medium
  • Attack Vector (AV)
    Local
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    Low
  • User Interaction (UI)
    None
  • Scope (S)
    Changed
  • Confidentiality (C)
    None
  • Integrity (I)
    None
  • Availability (A)
    High
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SUSE

3.2 low
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Red Hat

3.2 low