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Advisories

WDR201A WiFi Extender OS Command Injection via internet.cgi

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severity
critical
date
Affecting

  • WDR201A WiFi Extender firmware LFMZX28040922V1.02

CWE
  • CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') (CWE-78)
CVSS
9.3
CVSS V4 Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Credit
Matteo Strada, Daniele Berardinelli
Description
WDR201A WiFi Extender (HW V2.1, FW LFMZX28040922V1.02) contains an OS command injection vulnerability in the internet.cgi binary that allows unauthenticated remote attackers to execute arbitrary shell commands by injecting malicious input into the gateway POST parameter. Attackers can exploit unsanitized parameter concatenation in the set_add_routing function to inject shell commands that are executed via popen() with partial output reflected in the HTTP response.

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