CWE-646

Reliance on File Name or Extension of Externally-Supplied File

The product allows a file to be uploaded, but it relies on the file name or extension of the file to determine the appropriate behaviors. This could be used by attackers to cause the file to be misclassified and processed in a dangerous fashion.

CVE-2021-34639 (GCVE-0-2021-34639)
Vulnerability from cvelistv5
Published
2021-08-05 20:18
Modified
2024-08-04 00:19
Severity ?
7.5 (High) - CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
  • CWE-646 - Reliance on File Name or Extension of Externally-Supplied File
Summary
Authenticated File Upload in WordPress Download Manager <= 3.1.24 allows authenticated (Author+) users to upload files with a double extension, e.g. "payload.php.png" which is executable in some configurations. This issue affects: WordPress Download Manager version 3.1.24 and prior versions.
References
Impacted products
Vendor Product Version
W3 Eden, Inc. WordPress Download Manager Version: 3.1.24   <
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CVE-2023-45599 (GCVE-0-2023-45599)
Vulnerability from cvelistv5
Published
2024-03-05 11:34
Modified
2024-08-02 20:21
Severity ?
5.5 (Medium) - CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:L
CWE
  • CWE-646 - Reliance on File Name or Extension of Externally-Supplied File
Summary
A CWE-646 “Reliance on File Name or Extension of Externally-Supplied File” vulnerability in the “iec61850” functionality of the web application allows a remote authenticated attacker to upload any arbitrary type of file into the device. This issue affects: AiLux imx6 bundle below version imx6_1.0.7-2.
References
Impacted products
Vendor Product Version
AiLux imx6 bundle Version: 0   ≤
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CVE-2024-38432 (GCVE-0-2024-38432)
Vulnerability from cvelistv5
Published
2024-07-30 08:50
Modified
2024-08-02 04:12
Severity ?
5.5 (Medium) - CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:L
CWE
  • CWE-646 - Reliance on File Name or Extension of Externally-Supplied File
Summary
Matrix Tafnit v8 - CWE-646: Reliance on File Name or Extension of Externally-Supplied File
References
Impacted products
Vendor Product Version
Matrix Tafnit v8 Version: All versions   < 8.4.202
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CVE-2024-52052 (GCVE-0-2024-52052)
Vulnerability from cvelistv5
Published
2024-11-21 22:20
Modified
2024-11-22 16:11
Severity ?
9.4 (Critical) - CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
CWE
  • CWE-646 - Reliance on File Name or Extension of Externally-Supplied File
Summary
Wowza Streaming Engine below 4.9.1 permits an authenticated Streaming Engine Manager administrator to define a custom application property and poison a stream target for high-privilege remote code execution.
References
Impacted products
Vendor Product Version
Wowza Streaming Engine Version: 4.3.0
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          ]
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      ],
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CVE-2024-8517 (GCVE-0-2024-8517)
Vulnerability from cvelistv5
Published
2024-09-06 15:55
Modified
2024-09-09 15:49
Severity ?
9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE
  • CWE-646 - Reliance on File Name or Extension of Externally-Supplied File
Summary
SPIP before 4.3.2, 4.2.16, and 4.1.18 is vulnerable to a command injection issue. A remote and unauthenticated attacker can execute arbitrary operating system commands by sending a crafted multipart file upload HTTP request.
References
Impacted products
Vendor Product Version
SPIP SPIP Version: 4.3.0   ≤ 4.3.1
Version: 4.2.0   ≤ 4.2.15
Version: 4.1.0   ≤ 4.1.18
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CVE-2025-1889 (GCVE-0-2025-1889)
Vulnerability from cvelistv5
Published
2025-03-03 18:38
Modified
2025-03-04 11:43
Severity ?
5.3 (Medium) - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
CWE
  • CWE-646 - Reliance on File Name or Extension of Externally-Supplied File
Summary
picklescan before 0.0.22 only considers standard pickle file extensions in the scope for its vulnerability scan. An attacker could craft a malicious model that uses Pickle and include a malicious pickle file with a non-standard file extension. Because the malicious pickle file inclusion is not considered as part of the scope of picklescan, the file would pass security checks and appear to be safe, when it could instead prove to be problematic.
References
Impacted products
Vendor Product Version
mmaitre314 picklescan Version: 0.0.1   ≤ 0.0.21
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Show details on NVD website

To clipboard 

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Mitigation

Phase: Architecture and Design

Description:

  • Make decisions on the server side based on file content and not on file name or extension.
CAPEC-209: XSS Using MIME Type Mismatch

An adversary creates a file with scripting content but where the specified MIME type of the file is such that scripting is not expected. The adversary tricks the victim into accessing a URL that responds with the script file. Some browsers will detect that the specified MIME type of the file does not match the actual type of its content and will automatically switch to using an interpreter for the real content type. If the browser does not invoke script filters before doing this, the adversary's script may run on the target unsanitized, possibly revealing the victim's cookies or executing arbitrary script in their browser.

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