Directory traversal in Bitrix Site Manager - #VU6146
Published: March 21, 2017
Vulnerability identifier: #VU6146
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:N/SC:N/SI:L/SA:L/E:U/U:Clear
CVE-ID: N/A
CWE-ID: CWE-22
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Bitrix
Affected software:
Bitrix Site Manager
Bitrix Site Manager
Detailed vulnerability description
The vulnerability allows a remote attacker to overwrite arbitrary files on vulnerable system.
The vulnerability exists in "makeFileArrayFromArray()" function in "/bitrix/modules/advertising/classes/general/advertising.php" when processing file uploads. A remote authenticated attacker with access to "Advertising and banners" module can upload arbitrary file on the target system with specially crafted filename, containing directory traversal sequences (e.g. ../) and overwrite certain files on vulnerable system outside the web root directory.
The vulnerability exists in "makeFileArrayFromArray()" function in "/bitrix/modules/advertising/classes/general/advertising.php" when processing file uploads. A remote authenticated attacker with access to "Advertising and banners" module can upload arbitrary file on the target system with specially crafted filename, containing directory traversal sequences (e.g. ../) and overwrite certain files on vulnerable system outside the web root directory.
Remediation
Update "Advertising and banners" module to the latest version 17.0.0.