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.

Vulnerability/
CVE-2023-5760

high

8.2

CWE

367

EPSS

0.042%

8/11/2023

3/9/2024

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 Software	Affected Version	How to fix
Avast Avg Antivirus	=23.8

Remedy

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

Never miss a vulnerability like this again

Reference Links

https://support.norton.com/sp/static/external/tools/security-advisories.html

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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