Headline

CVE-2023-30197: [CVE-2023-30197] Improper Limitation of a Pathname to a Restricted Directory in Webbax - My inventory module for PrestaShop

Incorrect Access Control in the module “My inventory” (myinventory) <= 1.6.6 from Webbax for PrestaShop, allows a guest to download personal information without restriction by performing a path traversal attack.

1 year ago

CVE

Open in Source

#sql #vulnerability #web #git #php #auth

In the module “My inventory” (myinventory) from Webbax for PrestaShop, a guest can download personnal informations without restriction by performing a path traversal attack.

Summary

CVE ID: CVE-2023-30197
Published at: 2023-05-30
Platform: PrestaShop
Product: myinventory
Impacted release: <= 1.6.6 (1.6.7 fixed the vulnerability)
Product author: Webbax
Weakness: CWE-22
Severity: high (7.5), GDPR violation

Description

Due to a lack of permissions’s control and a lack of control in the path name’s construction, a guest can perform a path traversal to view all files on the information system.

WARNING : We are forced to tag it as a medium gravity due to the CWE type 22 but be warned that on our ecosystem, it must be considered critical since it unlocks hundreds admin’s ajax script of modules due to this : https://github.com/PrestaShop/PrestaShop/blob/6c05518b807d014ee8edb811041e3de232520c28/classes/Tools.php#L1247.

CVSS base metrics

Attack vector: network
Attack complexity: low
Privilege required: none
User interaction: none
Scope: unchanged
Confidentiality: high
Integrity: none
Availability: none

Vector string: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Possible malicious usage

Stealing secrets to unlock admin controllers based on ajax script
Exfiltrate all modules with all versions to facilited pentesting
Stealing table_prefix to greatly facilitate SQL injections for kiddies who don’t known how exploit DBMS design’s vulnerabilities or stealing database access to login in exposed PHPMyAdmin/Adminer/etc.
Bypass WAF / htaccess restrictions to read forbidden files (such as logs on predictible paths of banks’s modules inside /var/log/)

Patch from 1.6.6

--- 1.6.6/modules/myinventory/downloads/download.php
+++ 1.6.7/modules/myinventory/downloads/download.php
- $file = Tools::getValue('file');
+ $file = basename(Tools::getValue('file')).'.csv';

+if((strpos($file, './') === false) && substr($file,-4) == '.csv'){
...
+}

Other recommandations

You should consider to restrict the access of modules/myinventory/ to a whitelist or delete the module
NEVER exposed a PHPMyAdmin / Adminer / etc without, at least, a htpasswd
Activate OWASP 930’s rules on your WAF (Web application firewall) and adjust it for your Prestashop

Timeline

Date

Action

2023-02-25

Issue discovered during a code review by TouchWeb.fr

2023-02-25

Contact Author

2023-02-27

Author confirm alert’s read

2023-04-24

Received CVE ID

2023-05-02