CVE-2016-20031

Description

ZKTeco ZKBioSecurity 3.0 contains a local authorization bypass vulnerability in visLogin.jsp that allows attackers to authenticate without valid credentials by spoofing localhost requests. Attackers can exploit the EnvironmentUtil.getClientIp() method which treats IPv6 loopback address 0:0:0:0:0:0:0:1 as 127.0.0.1 and authenticates using the IP as username with hardcoded password 123456 to access sensitive information and perform unauthorized actions.

References

https://www.zeroscience.mk/en/vulnerabilities/ZSL-2016-5367.php

https://www.vulncheck.com/advisories/zkteco-zkbiosecurity-local-authorization-bypass-via-vislogin-jsp

https://www.exploit-db.com/exploits/40327/

https://packetstormsecurity.com/files/138571

https://exchange.xforce.ibmcloud.com/vulnerabilities/116488

https://cxsecurity.com/issue/WLB-2016090003

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3

CVSS v4

EPSS