CVE-2023-5760 - CVE House
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Status published High CVE-2023-5760

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

Vulnerability Description

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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • Wei Sheng Teo of Ensign InfoSecurity|

References

Affected Vendor

Affected Software

Avast/Avg Antivirus
Vulnerable Versions:
23.8

Timeline

Official Publish: November 8th, 2023
Last Modified: September 3rd, 2024
Added to House: July 22nd, 2026

CVSS Vectors

V3: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H

Weaknesses (CWE)

CWE-367

MITRE ATT&CK TTPs

T1574 Hijack Execution Flow
Privilege Escalation
T1068 Exploitation for Privilege Escalation
Privilege Escalation
T1036 Masquerading
Defense Evasion
T1485 Data Destruction
Impact
T1005 Data from Local System
Collection