More Tricks For Defeating SSL In Practice

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$\H1B%-12345X@PJL JOB “HackingPrinters”$

What are “most” SSL implementations?●●●●Web Browsers●Firefox, IE, Chrome, Lynx, Curl,Mail Clients●Thunderbird, Outlook, EvolutionChat Clients●Pidgin, AIM, irssi, centericqSSL VPNs●AEP, Citrix, etc...Moxie MarlinspikeInstitute For Disruptive Studies
A First Cut: updated sslsniffsslsniffIff “null prefix attack” certificateis availableMoxie MarlinspikeInstitute For Disruptive Studies
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More Tricks For Defeating SSL InPra
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Certificate ChainingVeriSignInterme
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What they say:●●●●Verify th
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VeriSignWhat if...IntermediateCAInt
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What they say:●●●●Verify th
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But we just created a valid certifi
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...is a somewhat obscure field.Moxi
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And then in 2002...●●●Microso
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sslsniffMoxie MarlinspikeInstitute
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Lately, I've been talking aboutSSL
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Moxie MarlinspikeInstitute For Disr
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In the context of web browsing●
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Moxie MarlinspikeInstitute For Disr
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We Can Attack SSLBefore We Even Get
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sslstripMoxie MarlinspikeInstitute
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sslstrip●Watch HTTP traffic go by
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How Does It Look?
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How Does It Look?
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The sites themselves confuse us.
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Some sites provide no visible diffe
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Other Little Tricks:
Page 49 and 50: Where do we need to go from here?Mo
Page 51 and 52: What's with certificates, anyways?X
Page 53 and 54: What's with certificates, anyways?X
Page 55 and 56: Moxie MarlinspikeInstitute For Disr
Page 57 and 58: SSL/TLS Handshake BeginningsClientH
Page 59 and 60: The Problems For Us BeginAttackerCl
Page 61 and 62: In 2000, things were different.Moxi
Page 63 and 64: Identification!Moxie MarlinspikeIns
Page 65 and 66: Actual people involved...Moxie Marl
Page 67 and 68: These days it's all about:online do
Page 71 and 72: PKCS #10CertificateRequestVersionSu
Page 81 and 82: SubjectsDistinguishedNameCountrySta
Page 83 and 84: SubjectsDistinguishedNameCountrySta
Page 85 and 86: CNcommonName ::=SEQUENCE { { 2 5 4
Page 87 and 88: PKCS #10 SubjectDistinguishedNameCo
Page 89 and 90: PKCS #10 SubjectCommon Nameverisign
Page 91 and 92: PKCS #10 SubjectCommon Namewww.payp
Page 93 and 94: PKCS #10 Certificate SigningRequest
Page 95 and 96: Our Original ScenarioX509Certificat
Page 97 and 98: In memory, though...char *destinati
Page 99: In the eyes of most SSLimplementati
Page 103 and 104: How does it look?Moxie MarlinspikeI
Page 105 and 106: How does it look?Moxie MarlinspikeI
Page 107 and 108: 1) Targeted attacks are kind of lam
Page 115 and 116: Universal Wildcard*~.thoughtcrime.o
Page 117 and 118: And... your remote exploit.● 144
Page 119 and 120: And... your remote exploit.● 144
Page 121 and 122: And... your remote exploit.(AAAAAAA
Page 123 and 124: And... your remote exploit.(AAAAAAA
Page 125 and 126: A Second Cut: sslsniff withwildcard
Page 127 and 128: What do we have to worry about?Moxi
Page 129 and 130: What do we have to worry about?1) C
Page 133 and 134: Defeating OCSPOCSPResponse ::= SEQU
Page 143 and 144: A Third Cut: ocsp-aware sslsniffssl
Page 145 and 146: What do we have to worry about?2) U
Page 147 and 148: Firefox/Thunderbird: A Case StudyUp
Page 149 and 150: Firefox/Thunderbird: A Case Study
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A Fourth Cut: update-aware sslsniff
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Postscript:Stripping NULL is no sol
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Conclusion●●●●●●We have
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