SB2020043025 - Multiple vulnerabilities in F5 BIG-IP products

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Main Vulnerability Database SB2020043025

SB2020043025 - Multiple vulnerabilities in F5 BIG-IP products

Published: April 30, 2020 Updated: April 30, 2020

Security Bulletin ID SB2020043025
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 3
Exploitation vector Remote access
Highest impact Information disclosure

Breakdown by Severity

Medium 67% Low 33%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 3 vulnerabilities.


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

CWE-ID: CWE-434 - Unrestricted Upload of File with Dangerous Type

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green


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)

CWE-ID: CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U/U:Clear


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)

CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green


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