SB2023070630 - Debian update for mediawiki
Published: July 6, 2023
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 3 secuirty vulnerabilities.
1) Information disclosure (CVE-ID: CVE-2023-29141)
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to way application handles the X-Forwarded-For header. A remote attacker can use the X-Forwarded-For header to brute-force the autoblocked IP addresses.
2) Arbitrary file upload (CVE-ID: CVE-2023-36674)
The vulnerability allows a remote user to upload dangerous files to the server.
The vulnerability exists due to insufficient validation of file during file upload in Manualthumb. A remote user can upload dangerous files on the server.
3) Cross-site scripting (CVE-ID: CVE-2023-36675)
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 within BlockLogFormatter.php in BlockLogFormatter. 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.
Remediation
Install update from vendor's website.