{"id":"CVE-2018-17153","published":"2018-09-18T00:00:00Z","modified":"2024-08-05T10:39:59Z","title":"It was discovered that the Western Digital My Cloud device before 2.30.196 is affected by an authentication bypass…","vendor":null,"product":null,"tier":"core","eol":null,"description":{"text":"It was discovered that the Western Digital My Cloud device before 2.30.196 is affected by an authentication bypass vulnerability. An unauthenticated attacker can exploit this vulnerability to authenticate as an admin user without needing to provide a password, thereby gaining full control of the device. (Whenever an admin logs into My Cloud, a server-side session is created that is bound to the user's IP address. After the session is created, it is possible to call authenticated CGI modules by sending the cookie username=admin in the HTTP request. The invoked CGI will check if a valid session is present and bound to the user's IP address.) It was found that it is possible for an unauthenticated attacker to create a valid session without a login. The network_mgr.cgi CGI module contains a command called \"cgi_get_ipv6\" that starts an admin session -- tied to the IP address of the user making the request -- if the additional parameter \"flag\" with the value \"1\" is provided. Subsequent invocation of commands that would normally require admin privileges now succeed if an attacker sets the username=admin cookie.","provenance":"source","from":"CVE.org"},"summary":{"text":"The Western Digital My Cloud device firmware before 2.30.196 contains an authentication bypass in the network_mgr.cgi CGI module, where the \"cgi_get_ipv6\" command creates an admin session tied to the requester's IP address when the parameter \"flag\" is set to \"1\". An unauthenticated attacker who can reach the device over the network can send that request to create the session, then set the username=admin cookie on later requests to invoke admin-only CGI modules and gain full control of the device, with no password or user interaction required.","provenance":"ai","model":"claude-haiku-5-5","generatedAt":"2026-10-23T07:15:43Z"},"cvss":null,"epss":{"score":0.86586,"percentile":0.99737,"date":"2026-10-28","provenance":"source"},"kev":null,"vulncheckKev":null,"exploited":false,"otx":{"pulseCount":0,"pulses":[],"provenance":"machine"},"cwes":[],"references":[{"url":"http://www.securityfocus.com/bid/105359","tags":["vdb-entry"]},{"url":"https://securify.nl/nl/advisory/SFY20180102/authentication-bypass-vulnerability-in-western-digital-my-cloud-allows-escalation-to-admin-privileges.html","tags":[]},{"url":"https://support.wdc.com/knowledgebase/answer.aspx?ID=25952","tags":[]},{"url":"http://packetstormsecurity.com/files/173802/Western-Digital-MyCloud-Unauthenticated-Command-Injection.html","tags":[]}],"techniques":[{"id":"T1190","name":"Exploit Public-Facing Application","tactics":["initial-access"],"provenance":"ai","basis":"ai-mapping","bases":["ai-mapping"],"basisDetail":"claude-haiku-5-5: unauthenticated network exploitation of exposed web interface","mappingType":"exploitation_technique","evidence":[{"from":"description","quote":"An unauthenticated attacker can exploit this vulnerability to authenticate as an admin user","start":130,"end":221}],"model":"claude-haiku-5-5","confidence":"medium","confidenceNote":"AI-mapped from the description (quote-validated, not expert-reviewed)"},{"id":"T1078","name":"Valid Accounts","tactics":["initial-access","persistence","privilege-escalation","stealth"],"provenance":"ai","basis":"ai-mapping","bases":["ai-mapping"],"basisDetail":"claude-haiku-5-5: gains valid admin session without credentials","mappingType":"primary_impact","evidence":[{"from":"description","quote":"thereby gaining full control of the device","start":261,"end":303}],"model":"claude-haiku-5-5","confidence":"medium","confidenceNote":"AI-mapped from the description (quote-validated, not expert-reviewed)"}],"reports":[{"id":"SRC-f4c98cea9a56376facbe","title":"WTB: Adwind Trojan Circumvents Antivirus Software To Infect Your PC","publisher":"anomali.com","url":"https://www.anomali.com/blog/wtb-adwind-trojan-circumvents-antivirus-software-to-infect-your-pc","date":null,"mentions":[{"quote":"This vulnerability, registered as “CVE-2018-17153,” can allow for unauthorised actors to bypass authentication and register their activity on a specific IP address as an administrator.","start":8861,"end":9045}]}],"affected":[],"advisories":[],"euvd":{"id":"EUVD-2018-8928","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2018-8928","exploited":false,"exploitedSince":null,"provenance":"source"},"exploits":[],"exploitSources":{"metasploit":[{"name":"Western Digital MyCloud unauthenticated command injection","module":"exploit/linux/http/wd_mycloud_unauthenticated_cmd_injection","type":"exploit","disclosureDate":"2016-12-14","url":"https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/linux/http/wd_mycloud_unauthenticated_cmd_injection.rb"}],"nuclei":[{"id":"CVE-2018-17153","name":"Western Digital MyCloud NAS - Authentication Bypass","severity":"critical","path":"http/cves/2018/CVE-2018-17153.yaml","url":"https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2018/CVE-2018-17153.yaml"}],"first":{"date":"2016-12-14","source":"Metasploit","url":"https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/linux/http/wd_mycloud_unauthenticated_cmd_injection.rb"},"provenance":"source"},"exploitRefs":["http://packetstormsecurity.com/files/173802/Western-Digital-MyCloud-Unauthenticated-Command-Injection.html"],"flow":[{"stage":"exploitation","techniques":["T1190"],"provenance":"ai"},{"stage":"primary","techniques":["T1078"],"provenance":"ai"}],"timeline":[{"date":"2016-12-14","kind":"exploit-public","label":"First public exploit: Metasploit","url":"https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/linux/http/wd_mycloud_unauthenticated_cmd_injection.rb","provenance":"source"},{"date":"2018-09-18","kind":"published","label":"Published (CVE.org)","url":"https://www.cve.org/CVERecord?id=CVE-2018-17153","provenance":"source"}],"speed":{"daysToPublicExploit":null,"firstExploitFrom":"Metasploit","daysToKev":null},"priority":{"score":28.8,"factors":[{"name":"In a KEV catalog","points":0.0,"detail":"not listed"},{"name":"Recent KEV listing","points":0.0,"detail":"not listed"},{"name":"Known ransomware use","points":0.0,"detail":"not known"},{"name":"EPSS percentile","points":19.95,"detail":"percentile 0.9974"},{"name":"Named in threat reports","points":3.87,"detail":"1 report"},{"name":"Public exploit code","points":5.0,"detail":"1 NVD exploit link; 1 Metasploit module; 1 nuclei template"},{"name":"Mentioned in OTX pulses","points":0.0,"detail":"0 pulses"},{"name":"CVSS severity","points":0.0,"detail":"no CVSS"},{"name":"End-of-life product","points":0.0,"detail":"supported or unknown"}]}}