CVE-2013-10034: File Upload RCE

Description

An unrestricted file upload vulnerability exists in Kaseya KServer versions prior to 6.3.0.2. The uploadImage.asp endpoint allows unauthenticated users to upload files to arbitrary paths via a crafted filename parameter in a multipart/form-data POST request. Due to the lack of authentication and input sanitation, an attacker can upload a file with an .asp extension to a web-accessible directory, which can then be invoked to execute arbitrary code with the privileges of the IUSR account. The vulnerability enables remote code execution without prior authentication and was resolved in version 6.3.0.2 by removing the vulnerable uploadImage.asp endpoint.

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Weakness Type (CWE)

CWE-434 Unrestricted Upload

References

Other References

https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/windows/http/kaseya_uploadimage_file_upload.rb https://web.archive.org/web/20150210113922/http://security-assessment.com/files/documents/advisory/Kaseya%20File%20Upload.pdf https://www.exploit-db.com/exploits/29675 https://www.vulncheck.com/advisories/kaseya-arbitrary-file-upload-rce

Frequently Asked Questions

What is CVE-2013-10034? +

An unrestricted file upload vulnerability exists in Kaseya KServer versions prior to 6.3.0.2. The uploadImage.asp endpoint allows unauthenticated users to upload files to arbitrary paths via a crafted filename parameter in a multipart/form-data POST request. Due to the lack of authentication and input sanitation, an attacker can upload a file with an .asp extension to a web-accessible directory, which can then be invoked to execute arbitrary code with the privileges of the IUSR account. The vulnerability enables remote code execution without prior authentication and was resolved in version 6.3.0.2 by removing the vulnerable uploadImage.asp endpoint.

How do I check if I'm vulnerable to CVE-2013-10034? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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CVE-2013-10034