ZDI-22-407: TP-Link TL-WR940N httpd newBridgessid Stack-based Buffer Overflow Remote Code Execution Vulnerability
This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of TP-Link TL-WR940N routers. Authentication is required to exploit this vulnerability. The specific flaw exists within the httpd service, which listens on TCP port 80 by default. The issue results from the lack of proper validation of 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 | Affected Version | How to fix |
|---|---|---|
| TP-Link WR940N |
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 the severity of ZDI-22-407?
The severity of ZDI-22-407 is considered high due to its potential for arbitrary code execution.
How do I fix ZDI-22-407?
To fix ZDI-22-407, update the firmware of your TP-Link TL-WR940N router to the latest version provided by the manufacturer.
What type of attacker can exploit ZDI-22-407?
ZDI-22-407 can be exploited by network-adjacent attackers who have authenticated access.
What is the affected service in ZDI-22-407?
The affected service in ZDI-22-407 is the httpd service that listens on TCP port 80.
Is authentication required to exploit ZDI-22-407?
Yes, authentication is required to exploit the vulnerability identified as ZDI-22-407.
- agent/type
- agent/softwarecombine
- agent/severity
- agent/title
- agent/references
- agent/description
- agent/event
- agent/source
- agent/tags
- collector/zdi-advisory
- source/ZDI
- alias/ZDI-22-407
- alias/ZDI-CAN-13993
- alias/CVE-2022-0650
- agent/software-canonical-lookup
- agent/software-canonical-lookup-request
- vendor/tp-link
- canonical/tp-link wr940n