ImpressCMS <= 1.4.2 (image-edit.php) Path Traversal Vulnerability
• Software Link:
• Affected Versions:
Version 1.4.2 and prior versions.
• Vulnerability Description:
The vulnerability is located in the /libraries/image-editor/image-edit.php script:
161if (@copy ( ICMS_IMANAGER_FOLDER_PATH . '/temp/' . $simage_temp, $categ_path . $simage->getVar ( 'image_name' ) )) {
162 if (@unlink ( ICMS_IMANAGER_FOLDER_PATH . '/temp/' . $simage_temp )) {
163 $msg = _MD_AM_DBUPDATED;190} else {
191 if (copy ( ICMS_IMANAGER_FOLDER_PATH . '/temp/' . $simage_temp, $categ_path . $imgname )) {
192 @unlink ( ICMS_IMANAGER_FOLDER_PATH . '/temp/' . $simage_temp );
193 }User input passed through the “image_temp” parameter is not properly sanitized before being used in a call to the unlink() function at lines 162 and 192. This can be exploited by authenticated attackers to carry out Path Traversal attacks and delete arbitrary files in the context of the web server process. This vulnerability could be exploited also to disclose the content of arbitrary files in case the web server allows for directory listing.
• Solution:
Upgrade to version 1.4.3 or later.
• Disclosure Timeline:
[19/01/2021] – Vendor notified through HackerOne
[29/01/2021] – Vulnerability acknowledged by the vendor
[03/02/2021] – CVE number assigned
[06/02/2022] – Version 1.4.3 released
[22/03/2022] – Public disclosure
• CVE Reference:
The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CVE-2021-26601 to this vulnerability.
• Credits:
Vulnerability discovered by Egidio Romano.