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Advisories

Tenda W30E V2 Permissive CORS Allows Cross-origin Data Access

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severity
high
date
Affecting

  • W30E V2 firmware <= v16.01.0.19(5037)

CWE
  • CWE-942 Permissive Cross-domain Security Policy with Untrusted Domains
CVSS
7.1
CVSS V4 Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Credit
Kazuma Matsumoto, a security researcher at GMO Cybersecurity by IERAE, Inc.
Description
Shenzhen Tenda W30E V2 firmware versions up to and including V16.01.0.19(5037) implement an insecure Cross-Origin Resource Sharing (CORS) policy on authenticated administrative endpoints. The device sets Access-Control-Allow-Origin: * in combination with Access-Control-Allow-Credentials: true, allowing attacker-controlled origins to issue credentialed cross-origin requests.