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CVE-2023-38831

HIGH
Published 2023-08-23T00:00:00
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CVSS Score

V3.1
7.8
/10
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Base Score Metrics
Exploitability: N/A Impact: N/A

EPSS Score

v2025.03.14
0.936
probability
of exploitation in the wild

There is a 93.6% chance that this vulnerability will be exploited in the wild within the next 30 days.

Updated: 2025-06-25
Exploit Probability
Percentile: 0.998
Higher than 99.8% of all CVEs

Attack Vector Metrics

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED

Impact Metrics

Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH

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.

Available Exploits

No exploits available for this CVE.

Related News

No news articles found for this CVE.

Affected Products

rarlab

winrar

Affected Versions:

0

Known Exploited Vulnerability

This vulnerability is actively being exploited in the wild

View KEV Details

Remediation Status

Overdue

Due Date

September 14, 2023

Added to KEV

August 24, 2023

Required Action

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Affected Product

Vendor/Project: RARLAB
Product: WinRAR

Ransomware Risk

Known Ransomware Use
KEV Catalog Version: 2025.01.24 Released: January 24, 2025

GitHub Security Advisories

Community-driven vulnerability intelligence from GitHub

⚠ Unreviewed HIGH

GHSA-w5x7-vwr2-4x27

Advisory Details

RARLabs 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 August 2023.

CVSS Scoring

CVSS Score

7.5

CVSS Vector

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

References

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

Advisory provided by GitHub Security Advisory Database. Published: August 23, 2023, Modified: April 4, 2024

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/
Published: 2023-08-23T00:00:00
Last Modified: 2024-12-18T17:48:09.676Z
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