PT-2024-13055 · Microsoft · Process Explorer

Or Yair · Published 2024-05-07 · Updated 2024-07-03 · CVE-2023-42757

Positive Technologies (AI Summary)

CVSS v3.1

4.2

Medium

Base vector

AV:L/AC:L/PR:H/UI:R/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions Process Explorer versions prior to 17.04

Description The issue allows attackers to make Process Explorer functionally unavailable, resulting in a denial of service for analysis. This can be achieved by renaming an executable file to a new extensionless 255-character name and launching it with NtCreateUserProcess. The problem stems from an issue in wcscat s error handling.

Recommendations For versions prior to 17.04, update to version 17.04 or later to resolve the issue. As a temporary workaround, consider avoiding the use of NtCreateUserProcess with renamed executable files until a patch is applied. Restrict access to renaming executable files to minimize the risk of exploitation.

Fix

Buffer Overflow

Weakness Enumeration

CWE-120

Related Identifiers

CVE-2023-42757

Affected Products

Process Explorer

References · 5

• https://nvd.nist.gov/vuln/detail/CVE-2023-42757 · Security Note
• https://github.com/SafeBreach-Labs/MagicDot · Note
• https://blackhat.com/asia-24/briefings/schedule/#magicdot-a-hackers-magic-show-of-disappearing-dots-and-spaces-36561 · Note
• https://safebreach.com/blog/magicdot-a-hackers-magic-show-of-disappearing-dots-and-spaces · Note
• https://twitter.com/CVEnew/status/1787926416409117137 · Twitter Post