CVE-2022-43622: D-Link DIR-1935 HNAP_AUTH Stack-based Buffer Overflow Remote Code Execution Vulnerability
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 HNAPAUTH 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.
Other sources
This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of D-Link DIR-1935 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 HNAPAUTH 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.
Affected Software
Remediation
Event History
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.