Headline

CVE-2022-43626: ZDI-22-1497

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 SetIPv4FirewallSettings requests to the web management portal. When parsing subelements within the IPv4FirewallRule 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. Was ZDI-CAN-16146.

1 year ago

CVE

Open in Source

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

November 3rd, 2022

D-Link DIR-1935 SetIPv4FirewallSettings IPv4FirewallRule Command Injection Remote Code Execution Vulnerability****ZDI-22-1497
ZDI-CAN-16146

CVE ID

CVE-2022-43626

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 SetIPv4FirewallSettings requests to the web management portal. When parsing subelements within the IPv4FirewallRule 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