SB2020040610 - Cloud Foundry UAA update for Apache Tomcat

Description

This security bulletin contains information about 4 secuirty vulnerabilities.

1) Path traversal (CVE-ID: CVE-2020-1938)

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to improper input validation in Apache Tomcat AJP connector. A remote attacker can send a specially crafted AJP request, include and execute arbitrary files on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

2) Inconsistent interpretation of HTTP requests (CVE-ID: CVE-2020-1935)

The vulnerability allows a remote attacker to perform HTTP request smuggling attack.

The vulnerability exists due to the HTTP header parsing code uses an approach to end-of-line parsing that allows some invalid HTTP headers to be parsed as valid. A remote attacker can send a specially crafted HTTP request and perform HTTP request smuggling attack.

3) Inconsistent interpretation of HTTP requests (CVE-ID: CVE-2019-17569)

The vulnerability allows a remote attacker to perform HTTP request smuggling attack.

The vulnerability exists due to improper input validation when processing a Transfer-Encoding headers. A remote attacker can send a specially crafted HTTP request and perform HTTP request smuggling attack.

4) Session Fixation (CVE-ID: CVE-2019-17563)

The vulnerability allows a remote attacker to perform a session fixation attack.

The vulnerability exists due to a race condition when FORM authentication is used in Apache Tomcat. A remote attacker can use a narrow window to perform a session fixation attack.

Remediation

Install update from vendor's website.

References

• https://github.com/cloudfoundry/uaa/releases/tag/v74.16.0