CVE-2023-40477: RARLAB WinRAR Recovery Volume Improper Validation of Array Index Remote Code Execution Vulnerability
First published: Fri May 03 2024(Updated: )
Last updated 12 March 2025
Credit: zdi-disclosures@trendmicro.com zdi-disclosures@trendmicro.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| WinRAR | ||
| debian/libclamunrar | 0.103.10-1~deb11u1 1.0.3-1~deb11u1 1.0.3-1~deb12u1 1.3.1-1 | |
| debian/rar | 2:6.23-1~deb11u1 2:6.23-1~deb12u1 2:7.10-2 | |
| debian/unrar-nonfree | 1:6.0.3-1+deb11u3 1:6.2.6-1+deb12u1 1:7.1.5-3 |
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Reference Links
- https://www.win-rar.com/singlenewsview.html?&L=0&tx_ttnews%5Btt_news%5D=232&cHash=c5bf79590657e32554c6683296a8e8aa
- https://www.zerodayinitiative.com/advisories/ZDI-23-1152/
- https://www.bleepingcomputer.com/news/security/winrar-zero-day-exploited-since-april-to-hack-trading-accounts/
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-40477
- https://nvd.nist.gov/vuln/detail/CVE-2023-40477
- https://launchpad.net/bugs/cve/CVE-2023-40477
- https://security-tracker.debian.org/tracker/CVE-2023-40477
- https://ubuntu.com/security/CVE-2023-40477
- https://blog.clamav.net/2023/08/clamav-120-feature-version-and-111-102.html
- https://www.win-rar.com/singlenewsview.html?&L=0&tx_ttnews%5Btt_news%5D=232&cHash=c5bf79590657e32554c6683296a8e8aa
Frequently Asked Questions
What is the severity of CVE-2023-40477?
The severity of CVE-2023-40477 is classified as critical due to the potential for remote code execution.
How do I fix CVE-2023-40477?
To fix CVE-2023-40477, update WinRAR to the latest version or apply available patches from RARLAB.
What software is affected by CVE-2023-40477?
CVE-2023-40477 affects RARLAB WinRAR and specific versions of libclamunrar and rar packages on Ubuntu and Debian.
What kind of attack exploits CVE-2023-40477?
CVE-2023-40477 can be exploited through specially crafted RAR files, requiring user interaction to execute the malicious code.
Is user interaction required to exploit CVE-2023-40477?
Yes, user interaction is required to exploit CVE-2023-40477, as the attacker must trick the user into opening a crafted RAR file.
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