Vulnerability 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.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://cxsecurity.com/issue/WLB-2016090003
- https://exchange.xforce.ibmcloud.com/vulnerabilities/116488
- https://packetstormsecurity.com/files/138571
- https://www.exploit-db.com/exploits/40327/
- https://www.vulncheck.com/advisories/zkteco-zkbiosecurity-local-authorization-by
- https://www.zeroscience.mk/en/vulnerabilities/ZSL-2016-5367.php
FAQ
What is CVE-2016-20031?
CVE-2016-20031 is a vulnerability with a CVSS score of 5.5 (MEDIUM). 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 c...
How severe is CVE-2016-20031?
CVE-2016-20031 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2016-20031?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.