Advisory Details

July 20th, 2020

D-Link Multiple Routers HNAP GetCAPTCHAsetting Authentication Bypass Vulnerability

CVE ID	CVE-2020-15633
CVSS SCORE	8.8, AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AFFECTED VENDORS	D-Link
AFFECTED PRODUCTS	Multiple Routers
VULNERABILITY DETAILS	This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of D-Link DIR-867, DIR-878, and DIR-882 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of HNAP requests. The issue results from incorrect string matching logic when accessing protected pages. An attacker can leverage this vulnerability to escalate privileges and execute code in the context of the router.
ADDITIONAL DETAILS	D-Link has issued an update to correct this vulnerability. More details can be found at: https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10186
DISCLOSURE TIMELINE	2020-07-02 - Vulnerability reported to vendor 2020-07-20 - Coordinated public release of advisory
CREDIT	chung96vn of Vietnam Cyber Security Center

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