#VU55417 Improper Authentication in Apache Tomcat - CVE-2021-30640

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Main Vulnerability Database Vulnerabilities #VU55417

#VU55417 Improper Authentication in Apache Tomcat - CVE-2021-30640

Published: July 29, 2021


Vulnerability identifier: #VU55417
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2021-30640
CWE-ID: CWE-287
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
Apache Tomcat
Software vendor:
Apache Foundation

Description

The vulnerability allows a remote attacker to bypass authentication process.

The vulnerability exists due to an error in the JNDI Realm when processing authentication requests. A remote attacker can authenticate using variations of a valid user name and bypass some of the protection provided by the LockOut Realm.


Remediation

Install updates from vendor's website.

External links