CVE-2022-43622: D-Link DIR-1935 HNAP_AUTH Stack-based Buffer Overflow Remote Code Execution Vulnerability
First published: Wed 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. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of Login requests to the web management portal. When parsing the HNAP_AUTH header, 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-16139.
Credit: zdi-disclosures@trendmicro.com zdi-disclosures@trendmicro.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| D-Link 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 | ||
| Dlink Dir-1935 Firmware | <=1.02 | |
| Dlink Dir-1935 Firmware | =1.03-b1 | |
| Dlink Dir-1935 Firmware | =1.03-b2 | |
| Dlink Dir-1935 |
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Reference Links
Frequently Asked Questions
What is CVE-2022-43622?
CVE-2022-43622 is a vulnerability that allows network-adjacent attackers to execute arbitrary code on affected D-Link DIR-1935 1.03 routers.
How severe is CVE-2022-43622?
CVE-2022-43622 has a severity score of 8.8 out of 10.
How does CVE-2022-43622 work?
CVE-2022-43622 exploits a stack-based buffer overflow vulnerability in the handling of Login requests to the web management portal of the D-Link DIR-1935 router.
Is authentication required to exploit CVE-2022-43622?
No, authentication is not required to exploit CVE-2022-43622.
How can I fix CVE-2022-43622?
To fix CVE-2022-43622, it is recommended to update the firmware of the D-Link DIR-1935 router to a version that is not affected by the vulnerability.
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