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CVE-2021-27705

Description

Buffer Overflow in Tenda G1 and G3 routers with firmware v15.11.0.17(9502)_CN allows remote attackers to execute arbitrary code via a crafted action/"qosIndex "request. This occurs because the "formQOSRuleDel" function directly passes the parameter "qosIndex" to strcpy without limit.

POC

Reference

- https://hackmd.io/Zb7lfFaNR0ScpaTssECFbg

Github

No PoCs found on GitHub currently.