The implementation of Action Message Format (AMF3) deserializers in Flamingo amf-serializer by Exadel, version 2.2.0, may allow instantiation of arbitrary classes due to improper code control

Also known as GHSA-j88v-q3vw-p9vr

Published 8 y ago 2018-06-11 · modified 4 mo ago 2026-06-17 · JSON

CVSS

9.8

v3.0 · NVD

CISA KEV

not known exploited

EPSS

8.1%

percentile 95%

Public exploits

none known

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.

Exploit prediction (EPSS)

8.07% probability of exploitation in the next 30 days, higher than 95% of all scored CVEs.

CVSS scores

Assigned by	Version	Score	Vector
NVD	3.0	9.8	`CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`
NVD	2.0	7.5	`AV:N/AC:L/Au:N/C:P/I:P/A:P`
GitHub	3.0	9.8	`CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`

Affected packages

Ecosystem	Package	Affected	Fixed in
maven	`com.exadel.flamingo.flex:amf-serializer`	<=2.2.0	no fix listed

Affected products

Exadel Flamingo amf-serializer

Classification

Weakness

CWE-913 Improper Control of Dynamically-Managed Code Resources
CWE-502 Deserialization of Untrusted Data

References

codewhitesec.blogspot.com /2017/04/amf.html · x_refsource_MISC, x_transferred
kb.cert.org /vuls/id/307983 · third-party-advisory, x_refsource_CERT-VN, x_transferred
securityweek.com /flaws-java-amf-libraries-allow-remote-code-execution · x_refsource_MISC, x_transferred
securityfocus.com /bid/97380 · vdb-entry, x_refsource_BID, x_transferred
nvd.nist.gov /vuln/detail/CVE-2017-3202 · advisory

Sources

CVE List: CVE-2017-3202
GitHub Advisory: GHSA-j88v-q3vw-p9vr
NVD: CVE-2017-3202

vulnwire keeps one entry per vulnerability: the CVE id wins, then GHSA; records that alias each other are merged. Machine-readable: JSON.

Summary