SB2021091019 - Fedora 34 update for drupal7
Published: September 10, 2021
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 5 secuirty vulnerabilities.
1) Link following (CVE-ID: CVE-2021-32610)
The vulnerability allows a remote attacker to compromise the affected system.
The vulnerability exists due to the application does not check if the file in the archive is a symbolic link when extracting it. A remote attacker can pass a specially crafted file to the application and overwrite arbitrary files on the system. Successful exploitation of the vulnerability may allow an attacker to compromise the affected system.
2) Cross-site scripting (CVE-ID: CVE-2020-13672)
The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.
The vulnerability exists due to insufficient sanitization of user-supplied data. A remote attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in user's browser in context of vulnerable website.
Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.
3) UNIX symbolic link following (CVE-ID: CVE-2020-36193)
The vulnerability allows a remote attacker to compromise the affected system.
The vulnerability exists due to a symlink following issue in tar.php file in Archive_Tar. A remote attacker can pass specially crafted archive to the application and force the application to overwrite arbitrary files on the system using directory traversal sequences.
Successful exploitation of the vulnerability may allow an attacker to compromise the affected system.
4) Input validation error (CVE-ID: CVE-2020-28949)
The vulnerability allows a remote attacker to compromise the affected system.
The vulnerability exists due to improper sanitization of the user-supplied input when processing URI handlers in filenames. A remote attacker can pass the "file://" string in the filename and overwrite arbitrary files on the system.
5) Deserialization of Untrusted Data (CVE-ID: CVE-2020-28948)
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 case sensitivity issues (e.g. "phar:" protocol is blocked, however "PHAR:" is not). 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.