Serial Killer Silently Pwning Your Java Endpoints
asd-f03-serial-killer-silently-pwning-your-java-endpoints asd-f03-serial-killer-silently-pwning-your-java-endpoints
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04.03.2016
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Ac;ve Vulnerability Scanning Some Burp-Plugins ac;vely try to exploit subset of exis@ng gadgets Either blind through OOB communica@on ("superserial-ac@ve") For applica@ons running on JBoss Or @me-based blind via delay ("Java Deserializa@on Scanner") For gadgets in Apache Commons Collec@ons 3 & 4 And gadgets in Spring 4 Recommenda@on: Adjust ac@ve scanning payloads to not rely on specific gadgets - beEer use a generic delay introduc@on Such as "SerialDoS" (by Wouter Coekaerts), which is only HashSet based as of January 2015 38
Hardening Advice #RSAC
- Page 1 and 2: SESSION ID: ASD-F03 Alvaro Muñoz S
- Page 3 and 4: What is Java Serializa;on again? Ta
- Page 5 and 6: Standing on the Shoulder of Giants
- Page 7 and 8: Triggering Execu;on via "Magic Meth
- Page 9 and 10: Exploi;ng "Magic Methods" But what
- Page 11 and 12: Exploi;ng Invoca;onHandler (IH) Gad
- Page 13 and 14: New RCE Gadget in BeanShell (CVE-20
- Page 15 and 16: New RCE Gadget in Jython (CVE pendi
- Page 17 and 18: Demo of aMack Let’s take a look a
- Page 19 and 20: Exis;ng Mi;ga;on Advice Simply remo
- Page 21 and 22: Exis;ng Mi;ga;on Advice Simply remo
- Page 23 and 24: Bypassing LookAhead Blacklists New
- Page 25 and 26: Example (has been fixed) org.apache
- Page 27 and 28: Demo of bypass Let’s take a look
- Page 29 and 30: Exploi;ng JNA 1 2 calc.exe 3 4 ja
- Page 31 and 32: #RSAC Finding Vulnerabili;es & Gadg
- Page 33 and 34: Finding Direct Deserializa;on Endpo
- Page 35 and 36: Finding Gadgets for Fun & Profit Si
- Page 37: Passive Deserializa;on Endpoint Det
- Page 41 and 42: Apply What You Have Learned Today N
Hardening Advice<br />
#RSAC
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