8.2
CWE
367
EPSS
0.042%
Advisory Published
Updated

CVE-2023-5760: Time-of-check to time-of-use (TOCTOU) bug leads to full local privilege escalation.

First published: Wed Nov 08 2023(Updated: )

A time-of-check to time-of-use (TOCTOU) bug in handling of IOCTL (input/output control) requests. This TOCTOU bug leads to an out-of-bounds write vulnerability which can be further exploited, allowing an attacker to gain full local privilege escalation on the system.This issue affects Avast/Avg Antivirus: 23.8.

Credit: security@nortonlifelock.com

Affected SoftwareAffected VersionHow to fix
=23.8

Remedy

We encourage customers to ensure their security software is always updated to the latest version available.

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Frequently Asked Questions

  • What is CVE-2023-5760?

    CVE-2023-5760 is a time-of-check to time-of-use (TOCTOU) bug in handling of IOCTL requests, which can lead to a full local privilege escalation.

  • How does CVE-2023-5760 affect Avast/Avg AntiVirus?

    CVE-2023-5760 affects Avast/Avg AntiVirus version 23.8, allowing an attacker to gain full local privilege escalation on the system.

  • What is the severity of CVE-2023-5760?

    The severity of CVE-2023-5760 is high with a CVSS score of 8.2.

  • How can an attacker exploit CVE-2023-5760?

    An attacker can exploit CVE-2023-5760 by exploiting the TOCTOU bug, which leads to an out-of-bounds write vulnerability, allowing them to gain full local privilege escalation.

  • How can I fix CVE-2023-5760?

    To fix CVE-2023-5760, it is recommended to update Avast/Avg AntiVirus to the latest version.

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