Headline

CVE-2023-30196: [CVE-2023-30196] Improper Limitation of a Pathname to a Restricted Directory in Webbax module : Sales Booster for PrestaShop

Prestashop salesbooster <= 1.10.4 is vulnerable to Incorrect Access Control via modules/salesbooster/downloads/download.php.

1 year ago

CVE

Open in Source

#sql #vulnerability #web #php #auth

In the module “Sales Booster” (salesbooster) from Webbax, a guest can download personnal informations without restriction.

Summary

CVE ID: CVE-2023-30196
Published at: 2023-05-22
Platform: PrestaShop
Product: salesbooster
Impacted release: <= 1.10.4 (1.10.5 fixed the vulnerability)
Product author: Webbax
Weakness: CWE-22
Severity: high (7.5)

Description

Due to predictible token 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.

Note : We are forced to tag it as a high 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

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 1.10.4

--- 1.10.4/modules/salesbooster/downloads/download.php
+++ 1.10.5/modules/salesbooster/downloads/download.php
...
-$file = Tools::getValue('file');
+$file = basename(Tools::getValue('file')).'.txt';
+if((strpos($file, './') === false) && substr($file,-4) == '.txt'){
...
+}
...

Other recommandations

It’s recommended to upgrade to the latest version of the module salesbooster.
Update the configuration SALESBOOSTER_TOKEN in your ps_configuration table with a string not predictible - be warned that the patch provided by author still suffer of a predictible security token mecanism.
You should consider to restrict the access of modules/salesbooster/ to a whitelist
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

2023-02-25

Request a CVE ID

2023-02-27

Author confirm alert’s read

2023-04-24