CVE-2012-10054: Umbraco CMS versions prior to 4.7.1 are vulnerable to unauthenticated remote code execution via the codeEditorSave.asmx SOAP endpoint, which exposes a…

PriorityP277critical9.8CVSS 3.1

AVNACLPRNUINSUCHIHAH

EXPLOIT

EPSS

2.64%

83.7th percentile

Umbraco CMS versions prior to 4.7.1 are vulnerable to unauthenticated remote code execution via the codeEditorSave.asmx SOAP endpoint, which exposes a SaveDLRScript operation that permits arbitrary file uploads without authentication. By exploiting a path traversal flaw in the fileName parameter, attackers can write malicious ASPX scripts directly into the web-accessible /umbraco/ directory and execute them remotely.

Affected

2 ranges

Vendor	Product	Version range	Fixed in
umbraco	cms	< 4.7.1	4.7.1
umbraco	umbraco_cms	< 4.7.1	4.7.1

Detection & IOCsextracted from sources · hover to see the quote

url/umbraco/codeEditorSave.asmx↗

path/umbraco/↗

→Monitor for unauthenticated SOAP requests to codeEditorSave.asmx invoking the SaveDLRScript operation, particularly from unauthenticated sessions. ↗
→Detect path traversal patterns in the fileName parameter of SaveDLRScript SOAP requests targeting the /umbraco/ web-accessible directory. ↗
→Alert on new .aspx file creation events within the /umbraco/ directory, especially by the IIS worker process identity (e.g., 'IIS APPPOOL\ASP.NET v4.0'). ↗
→Investigate HTTP requests to newly created .aspx files under /umbraco/ shortly after a POST to codeEditorSave.asmx, as the exploit writes then immediately executes the dropped script. ↗

·Exploitation requires the IIS application pool identity to have write permissions on the Windows Temp folder; environments with restricted IIS permissions may not be exploitable. ↗
·The dropped ASPX file persists on disk even after exploitation (content overwritten but file not deleted), unless a Meterpreter payload is used for automatic cleanup — forensic artifact remains regardless. ↗
·This vulnerability affects Umbraco CMS versions prior to 4.7.1; the Metasploit module was specifically tested against version 4.7.0.378 on Windows 7 32-bit SP1. ↗

CVSS provenance

nvdv3.19.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

nvdv4.09.3CRITICALCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

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