ISE SOHO Vulnerability Catalog Published - Independent Security ...

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Vulnerability: Backdoor CVE: CVE-2013-3366 (TEW-812DRU) CVE: CVE-2013-3367 (TEW-691GR, TEW-692GR) Description The TRENDnet TEW-812DRU router contains an intentional backdoor that is accessible through the web management interface. When a user requests a certain HTTP page, the router will start an unauthenticated Telnet daemon on port TCP/23. In addition to the backdoor discovered in the TEW-812DRU, similar backdoors were discovered in the TEW-691GR and TEW-692GR routers by performing static analysis of available source code. Attack Requirements ♦ Make an HTTP GET request to the router. ♦ Authentication is required for exploitation. Details ♦ Other firmware versions were not tested and could be vulnerable. Impact If an unauthenticated remote attacker is able to fool an authenticated user into clicking a malicious link, the attacker is able to leverage this backdoor to start an unauthenticated telnet daemon. Recommendations to the Vendor ♦ Remove the backdoor from the webserver. ♦ Additional information for vendors regarding immediate and long term fixes for these issues can be found here: http://www.securityevaluators.com/content/casestudies/routers/#recommendationsVendors Solution ♦ There currently is not a solution to this problem. Proof of Concept Exploit The following HTTP requests will enable an unauthenticated Telnet daemon. TRENDnet TEW-812DRU ♦ Backdoor exists in the Broadcom broadcom.c file. ♦ http://x.x.x.x/backdoor?password=j78G-DFdg_24Mhw3 22
TRENDnet TEW-691GR and TEW-692GR ♦ Backdoor exists in the TRENDnet management.c file ♦ http://x.x.x.x/backdoor?password=j78G-DFdg_24Mhw3 Disclosure Timeline ♦ 4/11/2013 - Notified TRENDnet ♦ 7/26/2013 - Public Disclosure References ♦ Advisory/Video: http://infosec42.blogspot.com ♦ http://securityevaluators.com/content/case-studies/ Credit ♦ Backdoor Discovered by: Jacob Holcomb - Security Analyst @ Independent Security Evaluators 23
Page 1 and 2: Vulnerability Catalog Revision 1 SO
Page 3 and 4: Vulnerability: Cross-‐Site Sc
Page 5 and 6: Summary ISE has performed extensiv
Page 7 and 8: Solution ♦ There currently is not
Page 9 and 10: ♦ Advisory/Video: http://infosec4
Page 11 and 12: TRENDnet TEW-‐812DRU Vulnerab
Page 13 and 14: Disclosure Timeline ♦ 4/11/2013
Page 15 and 16: Vulnerability: Multiple Buffer O
Page 17 and 18: JavaScript or HTML code in the vict
Page 19 and 20: ♦ There currently is not a soluti
Page 21: } function _enable23(){ document
Page 25 and 26: Proof of Concept Exploit TP-
Page 27 and 28: Details ♦ The router will need to
Page 29 and 30: ♦ 3/20/2013 - Contacted TP-Link
Page 31 and 32: Netgear WNDR4700 Vulnerability:
Page 33 and 34: all files stored on the external st
Page 35 and 36: References ♦ Advisory/Video: http
Page 37 and 38: Attack Requirements ♦ The attacke
Page 39 and 40: Figure 2 - WNDR4700 XSS #1 39
Page 41 and 42: Figure 4 -‐ WNDR4700 XSS #
Page 43 and 44: Linksys WRT310v2 Vulnerability:
Page 45 and 46: function PwN() {doc
Page 47 and 48: ♦ Advisory/Video: http://infosec4
Page 49 and 50: Figure 7 - EA6500 Malicious Co
Page 51 and 52: Solution ♦ There is no solution t
Page 53 and 54: Figure 9 - EA6500 DOM XSS Disc
Page 55 and 56: Content-‐Type: application/jso
Page 57 and 58: D-‐Link DIR-‐865L Vulnera
Page 59 and 60: document.DLINK.submit() Disc
Page 61 and 62: Description The D-Link DIR-865L rou
Page 63 and 64: ♦ Additional information for vend
Page 65 and 66: ♦ 7/26/2013 - Public Disclosure R
Page 67 and 68: these issues can be found here: htt
Page 69 and 70: ♦ Validate HTTP Basic Authenticat
Page 71 and 72: Vulnerability: Authentication Byp
Page 73 and 74:
Impact If an unauthenticated attack
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these issues can be found here: htt
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attacker from gaining access if an
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var wan_type=0; var wan_mac_addr
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attacker from gaining access if an
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Solution ♦ There currently is not
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Disclosure Timeline ♦ 2/11/2013 -
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var bEncPassword=1; var auto_che
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Solution ♦ There is no solution t
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studies/routers/#recommendationsVen
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Solution ♦ There is no solution t
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studies/routers/#recommendationsVen
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# The ASUS RT-‐AC66U contai
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try: print """ [*] Attempting
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Disclosure Timeline ♦ 7/26/2013 -
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