SB2020043025 - Multiple vulnerabilities in F5 BIG-IP products

Description

This security bulletin contains information about 3 secuirty vulnerabilities.

1) Arbitrary file upload (CVE-ID: CVE-2020-5880)

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to and error in the "restjavad" process which may expose a way to upload arbitrary files on the BIG-IP system, bypassing the authorization system. A remote authenticated attacker can upload arbitrary files, fill the disk storage and make the BIG-IP host inoperable.

2) Cross-site scripting (CVE-ID: CVE-2020-5889)

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 BIG-IP APM portal access. 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.

3) Information disclosure (CVE-ID: N/A)

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to the BIG-IP APM system may log random data after the APM session ID in the "/var/log/apm" logs. A remote attacker can use the "ACCESS::log" command in an iRule associated with the BIG-IP APM virtual server and cause the characters logged after the APM session ID may leak random information.

Remediation

Install update from vendor's website.

References

• https://support.f5.com/csp/article/K94325657
• https://support.f5.com/csp/article/K24415506
• https://support.f5.com/csp/article/K43404365