ZDI-CAN-9661: (Pwn2Own) TP-Link Archer A7 DNS Response Improper Input Validation Remote Code Execution Vulnerability
This vulnerability allows remote attackers to execute arbitrary code on affected installations of TP-Link Archer A7 AC1750 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of DNS responses. The issue results from the lack of proper validation of DNS reponses prior to further processing. An attacker can leverage this in conjunction with other vulnerabilities to execute code in the context of the root user.
| Affected Software | Affected Version | How to fix |
|---|---|---|
| TP-Link Archer A7 Firmware |
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-CAN-9661?
The severity of ZDI-CAN-9661 is critical due to its potential for remote code execution without authentication.
How do I fix ZDI-CAN-9661?
To fix ZDI-CAN-9661, update the firmware of your TP-Link Archer A7 AC1750 router to the latest version provided by TP-Link.
What type of devices are affected by ZDI-CAN-9661?
ZDI-CAN-9661 affects TP-Link Archer A7 AC1750 routers.
Can ZDI-CAN-9661 be exploited remotely?
Yes, ZDI-CAN-9661 can be exploited remotely by attackers without requiring authentication.
What is the nature of the flaw in ZDI-CAN-9661?
The flaw in ZDI-CAN-9661 is related to improper handling of DNS responses, which can lead to arbitrary code execution.
- agent/references
- agent/severity
- agent/title
- agent/event
- agent/softwarecombine
- agent/tags
- agent/description
- collector/zdi-advisory
- alias/ZDI-20-337
- alias/ZDI-CAN-9661
- alias/CVE-2020-10885
- agent/software-canonical-lookup-request
- agent/type
- vendor/tp-link
- canonical/tp-link archer a7 firmware