Out-of-Bounds Affecting xen package, versions <4.7.2-r0


0.0
critical

Snyk CVSS

    Attack Complexity Low
    Scope Changed
    Confidentiality High
    Integrity High
    Availability High

    Threat Intelligence

    EPSS 0.14% (49th percentile)
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NVD
9.9 critical
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Red Hat
5.5 medium

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  • Snyk ID SNYK-ALPINE314-XEN-1308630
  • published 21 Jul 2020
  • disclosed 27 Jul 2018

How to fix?

Upgrade Alpine:3.14 xen to version 4.7.2-r0 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream xen package and not the xen package as distributed by Alpine. See How to fix? for Alpine:3.14 relevant fixed versions and status.

A heap buffer overflow flaw was found in QEMU's Cirrus CLGD 54xx VGA emulator's VNC display driver support before 2.9; the issue could occur when a VNC client attempted to update its display after a VGA operation is performed by a guest. A privileged user/process inside a guest could use this flaw to crash the QEMU process or, potentially, execute arbitrary code on the host with privileges of the QEMU process.