What’s Vulnerable › Vulnerabilities

CVE-2017-3206: The Action Message Format (AMF3) deserializers used by Flamingo amf-serializer by Exadel, version 2.2.0, allows external entity references (XXEs) from XML documents embedded within AMF3 messages

• Severity: critical (CVSS 9.8 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 3.6% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2018-06-11 · updated 2026-06-17
• Weakness: CWE-611

Description

The Java implementation of AMF3 deserializers used by Flamingo amf-serializer by Exadel, version 2.2.0, allows external entity references (XXEs) from XML documents embedded within AMF3 messages. If the XML parsing is handled incorrectly it could potentially expose sensitive data on the server, denial of service, or server side request forgery.

Affected products

• Exadel Flamingo amf-serializer: 2.2.0

References

• http://www.securityfocus.com/bid/97380
• http://www.securityweek.com/flaws-java-amf-libraries-allow-remote-code-execution
• https://codewhitesec.blogspot.com/2017/04/amf.html
• https://www.kb.cert.org/vuls/id/307983
• http://www.securityfocus.com/bid/97380
• http://www.securityweek.com/flaws-java-amf-libraries-allow-remote-code-execution
• https://codewhitesec.blogspot.com/2017/04/amf.html
• https://www.kb.cert.org/vuls/id/307983

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