CVE-2021-37334

Umbraco Forms version 4.0.0 up to and including 8.7.5 and below are vulnerable to a security flaw that could lead to a remote code execution attack and/or arbitrary file deletion. A vulnerability occurs because validation of the file extension is performed after the file has been stored in a temporary directory. By default, files are stored within the application directory structure at %BASEDIR%/APP_DATA/TEMP/FileUploads/. Whilst access to this directory is restricted by the root web.config file, it is possible to override this restriction by uploading another specially crafted web.config file to the temporary directory. It is possible to exploit this flaw to upload a malicious script file to execute arbitrary code and system commands on the server.
Configurations

Configuration 1 (hide)

OR cpe:2.3:a:umbraco:forms:*:*:*:*:*:*:*:*
cpe:2.3:a:umbraco:forms:*:*:*:*:*:*:*:*
cpe:2.3:a:umbraco:forms:*:*:*:*:*:*:*:*
cpe:2.3:a:umbraco:forms:*:*:*:*:*:*:*:*
cpe:2.3:a:umbraco:forms:*:*:*:*:*:*:*:*
cpe:2.3:a:umbraco:forms:*:*:*:*:*:*:*:*
cpe:2.3:a:umbraco:forms:*:*:*:*:*:*:*:*
cpe:2.3:a:umbraco:forms:*:*:*:*:*:*:*:*
cpe:2.3:a:umbraco:forms:*:*:*:*:*:*:*:*
cpe:2.3:a:umbraco:forms:*:*:*:*:*:*:*:*
cpe:2.3:a:umbraco:forms:*:*:*:*:*:*:*:*
cpe:2.3:a:umbraco:forms:*:*:*:*:*:*:*:*
cpe:2.3:a:umbraco:forms:*:*:*:*:*:*:*:*
cpe:2.3:a:umbraco:forms:*:*:*:*:*:*:*:*
cpe:2.3:a:umbraco:forms:*:*:*:*:*:*:*:*
cpe:2.3:a:umbraco:forms:*:*:*:*:*:*:*:*

History

21 Nov 2024, 06:14

Type Values Removed Values Added
References () https://umbraco.com/blog/security-advisory-20th-of-july-2021-patch-is-now-available/ - Patch, Vendor Advisory () https://umbraco.com/blog/security-advisory-20th-of-july-2021-patch-is-now-available/ - Patch, Vendor Advisory
References () https://umbraco.com/blog/security-advisory-security-patches-for-umbraco-forms-ready-on-july-20th-2021-at-7-am-utc/ - Vendor Advisory () https://umbraco.com/blog/security-advisory-security-patches-for-umbraco-forms-ready-on-july-20th-2021-at-7-am-utc/ - Vendor Advisory

Information

Published : 2021-08-25 22:15

Updated : 2024-11-21 06:14


NVD link : CVE-2021-37334

Mitre link : CVE-2021-37334

CVE.ORG link : CVE-2021-37334


JSON object : View

Products Affected

umbraco

  • forms