#VU50177 Improper Authentication in Apache Shiro - CVE-2020-17523
Published: February 1, 2021 / Updated: February 4, 2021
Vulnerability identifier: #VU50177
Vulnerability risk: High
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:P/U:Amber
CVE-ID: CVE-2020-17523
CWE-ID: CWE-287
Exploitation vector: Remote access
Exploit availability:
Public exploit is available
Vulnerable software:
Apache Shiro
Apache Shiro
Software vendor:
Apache Foundation
Apache Foundation
Description
The vulnerability allows a remote attacker to bypass authentication process.
The vulnerability exists due to an error in when processing authentication requests in Apache Shiro with Spring. A remote attacker can send a specially crafted HTTP request to bypass authentication process and gain unauthorized access to the application.
Remediation
Install updates from vendor's website.