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CVE-2023-40477— RARLAB WinRAR Recovery Volume Improper Validation of Array Index Remote Code Execution Vulnerability

Quick assessment

Affected
RARLAB WinRAR
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

RAR是一个用于压缩的应用程序。 RAR 存在安全漏洞，该漏洞源于RAR 在恢复卷处理过程中存在特定缺陷，允许远程攻击者执行任意代码。

AI Predicted 8.8 Difficulty: Easy EPSS 11.38% · P96

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution
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I. Basic Information for CVE-2023-40477

Vulnerability Information
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Vulnerability Title
RARLAB WinRAR Recovery Volume Improper Validation of Array Index Remote Code Execution Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
RARLAB WinRAR Recovery Volume Improper Validation of Array Index Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of RARLAB WinRAR. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the processing of recovery volumes. The issue results from the lack of proper validation of user-supplied data, which can result in a memory access past the end of an allocated buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-21233.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
对数组索引的验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
RAR 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
RAR是一个用于压缩的应用程序。 RAR 存在安全漏洞，该漏洞源于RAR 在恢复卷处理过程中存在特定缺陷，允许远程攻击者执行任意代码。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

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Affected Products

Vendor Product Affected Versions CPE Subscribe
RARLAB WinRAR 6.21 -

II. Public POCs for CVE-2023-40477

# POC Description Source Link Shenlong Link
1 Scan for WinRAR files affected to CVE-2023-40477 https://github.com/winkler-winsen/Scan_WinRAR POC Details
2 CVE-2023-40477 PoC by Wild-Pointer https://github.com/wildptr-io/Winrar-CVE-2023-40477-POC POC Details
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III. Intelligence Information for CVE-2023-40477

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Vendor Advisories for CVE-2023-40477 (1)

Vendor Pages for CVE-2023-40477 (1)

IV. Related Vulnerabilities

Same product: WinRAR
Same vendor: RARLAB
Same weakness: CWE-129

V. Comments for CVE-2023-40477

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