Advisory Details

November 3rd, 2022

D-Link DIR-1935 SetStaticRouteIPv6Settings Command Injection Remote Code Execution Vulnerability

ZDI-22-1496
ZDI-CAN-16145

CVE ID CVE-2022-43624
CVSS SCORE 6.8, AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
AFFECTED VENDORS D-Link
AFFECTED PRODUCTS DIR-1935
VULNERABILITY DETAILS

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of D-Link DIR-1935 routers. Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed.

The specific flaw exists within the handling of SetStaticRouteIPv6Settings requests to the web management portal. When parsing subelements within the StaticRouteIPv6List element, the process does not properly validate a user-supplied string before using it to execute a system call. An attacker can leverage this vulnerability to execute code in the context of root.

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=SAP10310
DISCLOSURE TIMELINE
  • 2022-06-30 - Vulnerability reported to vendor
  • 2022-11-03 - Coordinated public release of advisory
CREDIT Anonymous
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