CVE-2022-43629: D-Link DIR-1935 SetSysEmailSettings Command Injection Remote Code Execution Vulnerability

Q: What is the vulnerability ID of this D-Link router vulnerability?

The vulnerability ID is CVE-2022-43629.

Q: What is the severity of CVE-2022-43629?

The severity of CVE-2022-43629 is medium (6.8).

Q: Which versions of D-Link DIR-1935 firmware are affected by this vulnerability?

Versions 1.02, 1.03-b1, and 1.03-b2 of D-Link DIR-1935 firmware are affected by this vulnerability.

Q: How can I mitigate this vulnerability?

Update the firmware of your D-Link DIR-1935 router to the latest version available.

Published Mar 29, 2023

Updated

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 SetSysEmailSettings requests to the web management portal. When parsing subelements within the SetSysEmailSettings 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-16149.

Other sources

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 SetSysEmailSettings requests to the web management portal. When parsing subelements within the SetSysEmailSettings 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.

Affected Software

9 affected components

Dlink Dir-1935 Firmware<=1.02

Dlink Dir-1935 Firmware=1.03-b1

Dlink Dir-1935 Firmware=1.03-b2

Dlink Dir-1935

D-Link Dir-1935 Firmware<=1.02

D-Link Dir-1935 Firmware=1.03-b1

D-Link Dir-1935 Firmware=1.03-b2

D-Link DIR-1935

Remediation

Patch Available

https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10310

Event History

Mar 29, 2023

CVE Published

via MITRE·12:00 AM

Data Sourced

via MITRE·12:00 AM

DescriptionSeverityWeakness

Mar 26, 2025

Advisory Published

via ZDI·10:24 AM

Frequently Asked Questions

What is the vulnerability ID of this D-Link router vulnerability?

The vulnerability ID is CVE-2022-43629.

What is the severity of CVE-2022-43629?

The severity of CVE-2022-43629 is medium (6.8).

How can this vulnerability be exploited?

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of D-Link DIR-1935 1.03 routers by bypassing the authentication mechanism.

Which versions of D-Link DIR-1935 firmware are affected by this vulnerability?