Headline

CVE-2022-43625: ZDI-22-1495

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of D-Link DIR-1935 1.03 routers. Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed. The specific flaw exists within the handling of SetStaticRouteIPv4Settings requests to the web management portal. When parsing the NetMask element, the process does not properly validate the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-16144.

1 year ago

CVE

Open in Source

#vulnerability #web #rce #perl #buffer_overflow #auth #sap

November 3rd, 2022

D-Link DIR-1935 SetStaticRouteIPv4Settings NetMask Stack-based Buffer Overflow Remote Code Execution Vulnerability****ZDI-22-1495
ZDI-CAN-16144

CVE ID

CVE-2022-43625

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 SetStaticRouteIPv4Settings requests to the web management portal. When parsing the NetMask element, the process does not properly validate the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. 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