CVE-2020-14076: Buffer Overflow
First published: Mon Jun 15 2020(Updated: )
TRENDnet TEW-827DRU devices through 2.06B04 contain a stack-based buffer overflow in the ssi binary. The overflow allows an authenticated user to execute arbitrary code by POSTing to apply.cgi via the action st_dev_connect, st_dev_disconnect, or st_dev_rconnect with a sufficiently long wan_type key.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| TRENDnet TEW-827DRU firmware | <=2.06b04 | |
| TRENDnet TEW-827DRU |
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Reference Links
- https://github.com/kuc001/IoTFirmware/blob/master/Trendnet/TEW-827/TRENDnet-st_dev.pdf
- https://github.com/kuc001/IoTFirmware/blob/master/Trendnet/TEW-827/st_dev_connect_overflow.pdf
- https://github.com/kuc001/IoTFirmware/blob/master/Trendnet/TEW-827/st_dev_disconnect_overflow.pdf
- https://github.com/kuc001/IoTFirmware/blob/master/Trendnet/TEW-827/st_dev_rconnect_overflow.pdf
Frequently Asked Questions
What is CVE-2020-14076?
CVE-2020-14076 is a vulnerability in TRENDnet TEW-827DRU devices through 2.06B04 that allows an authenticated user to execute arbitrary code via a stack-based buffer overflow.
How severe is CVE-2020-14076?
CVE-2020-14076 has a severity rating of 8.8 (high).
How can I exploit CVE-2020-14076?
An authenticated user can exploit CVE-2020-14076 by POSTing to apply.cgi via the action st_dev_connect, st_dev_disconnect, or st_dev_rconnect with a sufficiently long wan_type key.
What software versions are affected by CVE-2020-14076?
TRENDnet TEW-827DRU devices through version 2.06B04 are affected by CVE-2020-14076.
Are TRENDnet TEW-827DRU devices without the vulnerable firmware affected by CVE-2020-14076?
No, TRENDnet TEW-827DRU devices without the vulnerable firmware are not affected by CVE-2020-14076.
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