SB2020070807 - Multiple vulnerabilities in Citrix Application Delivery Controller, Citrix Gateway and Citrix SD-WAN WANOP appliance
Published: July 8, 2020
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 11 secuirty vulnerabilities.
1) Information disclosure (CVE-ID: CVE-2019-18177)
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to excessive data output by the application. A remote authenticated attacker can use a configured SSL VPN endpoint and gain unauthorized access to sensitive information on the system.
2) Input validation error (CVE-ID: CVE-2020-8187)
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. A remote attacker can use a configured SSL VPN or AAA endpoint and perform a denial of service (DoS) attack.
3) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2020-8190)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to application does not properly impose security restrictions. A local user on the NSIP can gain elevated privileges on the target system.
4) Cross-site scripting (CVE-ID: CVE-2020-8191)
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.
5) Improper Authorization (CVE-ID: CVE-2020-8193)
The vulnerability allows a remote attacker to bypass authorization process.
The vulnerability exists due to improper authorization. A remote authenticated attacker with access to the NSIP can bypass implemented security restrictions.
6) Code Injection (CVE-ID: CVE-2020-8194)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to improper input validation. A remote attacker can trick a victim to download a malicious binary from the NSIP and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
7) Information disclosure (CVE-ID: CVE-2020-8195)
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to excessive data output by the application. A remote user on the NSIP can gain unauthorized access to sensitive information on the system.
8) Information disclosure (CVE-ID: CVE-2020-8196)
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to excessive data output by the application. A remote user on the NSIP can gain unauthorized access to sensitive information on the system.
9) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2020-8197)
The vulnerability allows a remote user to escalate privileges on the system.
The vulnerability exists due to application does not properly impose security restrictions. A remote user on the NSIP can gain elevated privileges on the target system.
10) Stored cross-site scripting (CVE-ID: CVE-2020-8198)
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 inject 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.
11) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2020-8199)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to application does not properly impose security restrictions. A local user can gain elevated privileges on the target system.
Remediation
Install update from vendor's website.