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 |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
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.
- agent/author
- agent/references
- agent/type
- collector/mitre-cve
- source/MITRE
- agent/last-modified-date
- agent/severity
- agent/title
- agent/remedy
- agent/weakness
- agent/first-publish-date
- agent/description
- agent/event
- collector/nvd-index
- agent/software-canonical-lookup-request
- collector/nvd-api
- agent/softwarecombine
- agent/tags
- collector/zdi-advisory
- source/ZDI
- alias/ZDI-22-1491
- alias/ZDI-CAN-16139
- alias/CVE-2022-43622
- agent/software-canonical-lookup
- vendor/d-link
- canonical/d-link dir-1935 firmware
- version/d-link dir-1935 firmware/1.02
- version/d-link dir-1935 firmware/1.03-b1
- version/d-link dir-1935 firmware/1.03-b2
- canonical/d-link dir-1935
- vendor/dlink
- canonical/dlink dir-1935 firmware
- version/dlink dir-1935 firmware/1.02
- version/dlink dir-1935 firmware/1.03-b1
- version/dlink dir-1935 firmware/1.03-b2
- canonical/dlink dir-1935