SB2021042118 - Multiple vulnerabilities in Magento LTS
Published: April 21, 2021
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 3 secuirty vulnerabilities.
1) Input validation error (CVE-ID: CVE-2021-21426)
The vulnerability allows a remote attacker to delete files on the system.
The vulnerability exists due to insufficient validation of stream names within the "lib/Zend/Http/Response/Stream.php". A remote attacker can pass specially crafted input to the application and delete arbitrary files on the system.
2) SQL injection (CVE-ID: CVE-2021-21427)
The vulnerability allows a remote attacker to execute arbitrary SQL queries in database.
The vulnerability exists due to insufficient sanitization of user-supplied data within the "lib/Varien/Db/Adapter/Pdo/Mysql.php" script when processing field names. A remote attacker can send a specially crafted request to the affected application and execute arbitrary SQL commands within the application database.
Successful exploitation of this vulnerability may allow a remote attacker to read, delete, modify data in database and gain complete control over the affected application.
3) Deserialization of Untrusted Data (CVE-ID: CVE-2021-3007)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to insecure input validation when processing serialized data, related to the __destruct method of the ZendHttpResponseStream class in Stream.php. A remote attacker can pass specially crafted data to the application and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Remediation
Install update from vendor's website.