Cross-site scripting in Apache Tomcat - CVE-2019-0221

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Main Vulnerability Database Vulnerabilities #VU18638

Cross-site scripting in Apache Tomcat - CVE-2019-0221

Published: May 30, 2019 / Updated: November 25, 2021


Vulnerability identifier: #VU18638
CSH Severity: Low
CVSS v4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N]
CVE-ID: CVE-2019-0221
CWE-ID: CWE-79
Exploitation vector: Remote access
Exploit availability: Public exploit is available

Vulnerability details

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 within SSI printenv command, when parsing URI. 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.

Example: 

http://[host]/printenv.shtml?%3Cscript%3Ealert(%27xss%27)%3C/script%3E

Affected software

Apache Tomcat
JBoss Enterprise Web Server
Amazon Linux AMI
Gentoo Linux
Fedora
Ubuntu
Opensuse
Dell Support Assist Enterprise
Oracle Business Intelligence Enterprise Edition
tomcat8 (Ubuntu package)
libservlet3.0-java (Ubuntu package)
libtomcat7-java (Ubuntu package)
tomcat7 (Ubuntu package)
tomcat
Oracle Database Server

How to mitigate CVE-2019-0221

Install updates from vendor's website.

Apache Tomcat - addressed in versions 7.0.94, 8.5.40, 9.0.19
Dell Support Assist Enterprise - update to 4.00.06.00
JBoss Enterprise Web Server - update to 5.2.0
tomcat8 (Ubuntu package) - addressed in versions 8.0.32-1ubuntu1.10, 8.5.39-1ubuntu1~18.04.3
libservlet3.0-java (Ubuntu package) - update to Ubuntu Pro
libtomcat7-java (Ubuntu package) - update to Ubuntu Pro
tomcat7 (Ubuntu package) - update to Ubuntu Pro
tomcat - addressed in versions 7.0.94-1.el6, 9.0.21-1.fc29, 9.0.21-1.fc30

Links to Public Exploits and PoC-codes

External References

Related Security Bulletins