Auth bypass in Dlink Dva-5592

CVE-2018-17777

An issue was discovered on D-Link DVA-5592 A1_WI_20180823 devices. If the PIN of the page "/ui/cbpc/login" is the default Parental Control PIN (0000), it is possible to bypass the login form by editing the path of the cookie "sid" generated by the page. The attacker will have access to the router control panel with administrator privileges.

Vulnerability class: Broken Authentication

EPSS: 0.019 (77.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

References

  • cve@mitre.org (Third Party Advisory, x_refsource_MISC, Mitigation)

Frequently asked questions

What is CVE-2018-17777?
CVE-2018-17777 is a critical-severity vulnerability in Dlink Dva-5592, classified under Improper Authentication. CVSS score: 9.8/10. Published 2018-12-18.
How severe is CVE-2018-17777?
Critical severity. CVSS v3 base score is 9.8 out of 10.