EIP-7758d2d4

A vulnerability exists within the httpd server of the TP-Link WA850RE Universal Wi-Fi Range Extender that allows authenticated attackers to inject arbitrary commands as arguments to an execve() call due to a lack of input sanitization. Injected commands are executed with root privileges. This issue is further exacerbated when combined with the configuration leak from EIP-9098806c.

Vulnerability Identifiers

• Exodus Intelligence: EIP-7758d2d4
• MITRE CVE: TBD

Vulnerability Metrics

• CVSSv2 Score: 7.7

Vendor References

• 850RE V2: https://www.tp-link.com/us/support/download/tl-wa850re/v2/#Firmware
• 850RE V3: https://www.tp-link.com/us/support/download/tl-wa850re/v3/#Firmware

Discovery Credit

• Exodus Intelligence

Disclosure Timeline

• Disclosed to affected vendor: December 10th, 2021
• Disclosed to public: June 23rd, 2022

Further Information

Readers of this advisory who are interested in receiving further details around the vulnerability, mitigations, detection guidance, and more can contact us at [email protected].

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