SB2022040604 - Multiple vulnerabilities in MediaWiki
Published: April 6, 2022
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 4 secuirty vulnerabilities.
1) Cross-site scripting (CVE-ID: CVE-2022-28202)
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 in the widthheight, widthheightpage and nbytes properties of messages. 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.
2) Infinite loop (CVE-ID: CVE-2022-28201)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to infinite loop in the Title::newMainPage() function. A remote attacker can consume all available system resources and cause denial of service conditions.
3) Input validation error (CVE-ID: CVE-2022-28203)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of user-supplied input within Special:NewFiles on a wiki. A remote attacker can pass specially crafted input to the application and perform a denial of service (DoS) attack.
4) Input validation error (CVE-ID: CVE-2022-28204)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of user-supplied input in the Special:WhatLinksHere. A remote attacker can pass specially crafted input to the application and perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.