CVE-2017-3202 Deserialization of Untrusted Data in Flamingo amf-serializer
Remote attackers can achieve arbitrary code execution by sending malicious serialized objects to applications using the vulnerable Flamingo AMF serializer library.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2017-3202?
CVE-2017-3202 is a critical unsafe deserialization vulnerability in Exadel Flamingo amf-serializer, published on 11 Jun 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Which versions are affected by CVE-2017-3202?
2 open source packages ship an affected version, including com.exadel.flamingo.flex:amf-serializer. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
com.exadel.flamingo.flex:amf-serializer Maven | All versions to 2.2.0 | None |
com.exadel.flamingo.flex:amf-serializer Maven | All versions to 2.2.0 | None |
Products include Exadel Flamingo.
How do I fix CVE-2017-3202?
No fix has been published for CVE-2017-3202 yet. Limit exposure of the affected software until one is available.
Upgrade, and only deserialise data from trusted sources or with an allow-list of types. More about Unsafe deserialization.
Is CVE-2017-3202 being exploited?
There is no known exploitation of CVE-2017-3202 in the wild and no public exploit code.
Other vulnerabilities in Exadel Flamingo amf-serializer
Sources
Also known as GHSA-j88v-q3vw-p9vr.