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CVE-2023-38831

RARLAB WinRAR before 6.23 allows attackers to execute arbitrary code when a user attempts to view a benign file within a ZIP archive. The issue...

Basic Information

CVE State: PUBLISHED
Reserved Date: July 25, 2023
Published Date: August 23, 2023
Last Updated: December 18, 2024
Vendor: n/a
Product: n/a
Description: RARLAB WinRAR before 6.23 allows attackers to execute arbitrary code when a user attempts to view a benign file within a ZIP archive. The issue occurs because a ZIP archive may include a benign file (such as an ordinary .JPG file) and also a folder that has the same name as the benign file, and the contents of the folder (which may include executable content) are processed during an attempt to access only the benign file. This was exploited in the wild in April through October 2023.

CVSS Scores

CVSS v3.1

7.8 - HIGH

Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

SSVC Information

Exploitation: active
Technical Impact: total

Exploit Status

Exploited in the Wild: Yes (added 2023-08-24 00:00:00 UTC) Source
Proof of Concept Available: Yes (added 2023-12-12 14:54:30 UTC) Source
Used in Malware: Yes (added 2023-08-24 00:00:00 UTC) Source

References

https://www.group-ib.com/blog/cve-2023-38831-winrar-zero-day/ https://www.bleepingcomputer.com/news/security/winrar-zero-day-exploited-since-april-to-hack-trading-accounts/ https://news.ycombinator.com/item?id=37236100 http://packetstormsecurity.com/files/174573/WinRAR-Remote-Code-Execution.html https://blog.google/threat-analysis-group/government-backed-actors-exploiting-winrar-vulnerability/

Known Exploited Vulnerability Information

Source	Added Date
CISA	2023-08-24 00:00:00 UTC

Scanner Integrations

Scanner	URL	Date Detected
Metasploit	https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/windows/fileformat/winrar_cve_2023_38831.rb	2025-04-29 11:01:36 UTC

Potential Proof of Concepts

Warning: These PoCs have not been tested and could contain malware. Use at your own risk.

winrar_cve_2023_38831

Type: metasploit • Created: Unknown

Metasploit module for CVE-2023-38831

Hirusha-N/CVE-2021-34527-CVE-2023-38831-and-CVE-2023-32784

Type: github • Created: 2024-06-25 02:30:31 UTC • Stars: 0

SpamixOfficial/CVE-2023-38831

Type: github • Created: 2023-12-12 14:54:30 UTC • Stars: 1

CVE-2023-38831 Proof-of-concept code

malvika-thakur/CVE-2023-38831

Type: github • Created: 2023-09-21 06:08:30 UTC • Stars: 3

Proof-of-Concept (POC) of CVE-2023-38831 Zero-Day vulnerability in WinRAR

ameerpornillos/CVE-2023-38831-WinRAR-Exploit

Type: github • Created: 2023-09-12 16:01:17 UTC • Stars: 3

Proof of concept (PoC) exploit for WinRAR vulnerability (CVE-2023-38831) vulnerability

Malwareman007/CVE-2023-38831

Type: github • Created: 2023-09-12 14:07:00 UTC • Stars: 9

CVE-2023-38831 WinRaR Exploit Generator

xaitax/WinRAR-CVE-2023-38831

Type: github • Created: 2023-09-03 21:14:05 UTC • Stars: 12

This module exploits a vulnerability in WinRAR (CVE-2023-38831). When a user opens a crafted RAR file and its embedded document, a script is executed, leading to code execution.

Mich-ele/CVE-2023-38831-winrar

Type: github • Created: 2023-09-01 16:45:42 UTC • Stars: 3

CVE-2023-38831 winrar exploit builder

MorDavid/CVE-2023-38831-Winrar-Exploit-Generator-POC

Type: github • Created: 2023-08-30 19:55:11 UTC • Stars: 8

This is a POC for the CVE-2023-3883 exploit targeting WinRAR up to 6.22. Modified some existing internet-sourced POCs by introducing greater dynamism and incorporated additional try-except blocks within the code.