SB2021090815 - Multiple vulnerabilities in OTRS AG OTRS
Published: September 8, 2021
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 4 secuirty vulnerabilities.
1) Input validation error (CVE-ID: CVE-2021-36093)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a flaw in PostMaster filters. A remote attacker can send a specially crafted email and perform a denial of service (DoS) attack.
2) Information disclosure (CVE-ID: CVE-2021-36096)
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to generated Support Bundles contains private S/MIME and PGP keys if containing folder is not hidden. A remote attacker can gain unauthorized access to sensitive information on the system.
3) Information disclosure (CVE-ID: CVE-2021-36095)
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to excessive data output by the application in the "lost password" feature. A remote attacker can gain unauthorized access to sensitive information on the system.
4) Cross-site scripting (CVE-ID: CVE-2021-36094)
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 appointment edit screen. A remote authenticated 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.