SAP: Session (Fixation) Attacks and Protections - Black Hat

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Conclusions (2)• Session attacks can bypass even the mostadvanced authentication mechanisms• Session ID is equivalent to…– Password– Passphrase– Digital certificates– Smart cards– Fingerprint– Eye retinaCopyright © 2011 Taddong S.L. www.taddong.com76
Conclusions (3)• Impact on the web-app design and on multiplemodules (and 3 rd -party components)– Complexity of web-apps and core nature ofsession management infrastructures– Minor misconfiguration introduces vulnerability?– How easy is to fix session fixation?– Plan and test early in design and development• Promote (continuous) testing for session fixationflaws, development awareness, and improvevulnerability handling and disclosureCopyright © 2011 Taddong S.L. www.taddong.com77
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UPDATEDwww.taddong.comSAP: Session
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Sessions in Web Applications• A w
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OWASP Top 10 2010• The Top 10 Mos
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WASC Threat Clasification v2.0• W
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What Session Fixation Should Be?Obs
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Session ID Exchange (1)• Multiple
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Session ID ExchangeUsed vs. Accepte
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The Attacker is After the…http://
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Session Fixation Attackshttp://www.
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Attack Vectors (2)• Web traffic i
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Attack Vectors (4)• Cross-Site Sc
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Session Fixation ExploitationSummar
Page 25 and 26: Three Case Studies• From real-wor
Page 27 and 28: Case Study #1Joomla! Open-Source CM
Page 29 and 30: #1 Discovery and Exploitation• Ta
Page 31 and 32: #1 Vulnerability Disclosure Timelin
Page 33 and 34: Case Study #2Commercial Web Applica
Page 35 and 36: #2 Discovery and Exploitation (1)
Page 39 and 40: #2 Impact• Three possible scenari
Page 41 and 42: WebLogic HTTPS Enforcement (2)• H
Page 45 and 46: #2 Protections (2)HTTPS Secure Cook
Page 47 and 48: #2 Protections (4)WebLogic Session
Page 49 and 50: #2 Protections (6)Summary• Too ma
Page 51 and 52: #2 Protections (8)Industry standard
Page 53 and 54: #3 Summary• Session fixation in t
Page 57 and 58: #3 Discovery and Exploitation (4)Co
Page 61 and 62: #3 Impact (1)• Hijack any SAP use
Page 63 and 64: #3 Impact (2)• Direct impact of s
Page 67 and 68: SAP Disclosure Guidelines (1)• SA
Page 69 and 70: #3 Protections (1)• Monthly Patch
Page 71 and 72: #3 Protections (3)• Use HTTPS-onl
Page 73 and 74: ConclusionsCopyright © 2011 Taddon
Page 75: Conclusions (1)• Session fixation
Page 79 and 80: Questions? Copyright © 2011 Taddon
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SAP: Session (Fixation) Attacks and Protections - Black Hat

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