CVE-2017-3202
The Java implementation of AMF3 deserializers used in Flamingo amf-serializer by Exadel, version 2.2.0, may allow instantiation of arbitrary classes via their public parameter-less constructor and subsequently call arbitrary Java Beans setter methods.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (8.18%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
The Java implementation of AMF3 deserializers used in Flamingo amf-serializer by Exadel, version 2.2.0, may allow instantiation of arbitrary classes via their public parameter-less constructor and subsequently call arbitrary Java Beans setter methods. The ability to exploit this vulnerability depends on the availability of classes in the class path that make use of deserialization. A remote attacker with the ability to spoof or control information may be able to send serialized Java objects with pre-set properties that result in arbitrary code execution when deserialized.
- CVSS 3.0
- 9.8 CRITICALCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 8.18% probability · 95th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-913, CWE-502
- Affected
- exadel/flamingo
- Source
- cret@cert.org
References
- http://www.securityfocus.com/bid/97380Third Party Advisory, VDB Entry
- http://www.securityweek.com/flaws-java-amf-libraries-allow-remote-code-executionThird Party Advisory
- https://codewhitesec.blogspot.com/2017/04/amf.htmlExploit, Third Party Advisory
- https://www.kb.cert.org/vuls/id/307983Third Party Advisory, US Government Resource
- http://www.securityfocus.com/bid/97380Third Party Advisory, VDB Entry
- http://www.securityweek.com/flaws-java-amf-libraries-allow-remote-code-executionThird Party Advisory
- https://codewhitesec.blogspot.com/2017/04/amf.htmlExploit, Third Party Advisory
- https://www.kb.cert.org/vuls/id/307983Third Party Advisory, US Government Resource
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.