Advisory Published

ZDI-23-1009: Canonical Ubuntu OverlayFS File System Missing Authorization Local Privilege Escalation Vulnerability

First published: Fri Jul 28 2023(Updated: )

This vulnerability allows local attackers to escalate privileges on affected installations of Canonical Ubuntu. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.

Affected SoftwareAffected VersionHow to fix
Ubuntu Unattended Upgrades

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Frequently Asked Questions

  • What is the severity of ZDI-23-1009?

    The severity of ZDI-23-1009 is classified as high due to the potential for privilege escalation.

  • How do I fix ZDI-23-1009?

    To fix ZDI-23-1009, update your Ubuntu installation to the latest version that addresses this vulnerability.

  • Who is affected by ZDI-23-1009?

    ZDI-23-1009 affects installations of Canonical Ubuntu that use the libdevmapper1.02.1 package.

  • Can ZDI-23-1009 be exploited remotely?

    No, ZDI-23-1009 requires local access to execute low-privileged code before privilege escalation is possible.

  • What are the prerequisites for exploiting ZDI-23-1009?

    An attacker must first obtain the ability to execute low-privileged code on the target system to exploit ZDI-23-1009.

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