PT-2018-7250 · Flamingo · Flamingo Amf-Serializer

Published 2018-06-11 · Updated 2019-10-09 · CVE-2017-3201

Positive Technologies (AI Summary)

CVSS v3.1

8.1

High

Base vector

AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions: Flamingo amf-serializer version 2.2.0

Description: The Java implementation of AMF3 deserializers in Flamingo amf-serializer derives class instances from java.io.Externalizable, contrary to the AMF3 specification's recommendation of flash.utils.IExternalizable. This could allow a remote attacker with the ability to spoof or control an RMI server connection to send serialized Java objects that execute arbitrary code when deserialized.

Recommendations: For version 2.2.0, consider restricting the deserialization of Java objects from untrusted sources to minimize the risk of exploitation. As a temporary workaround, consider disabling the deserialization of objects that implement java.io.Externalizable until a patch is available.

Exploit

Fix

Deserialization of Untrusted Data

Weakness Enumeration

CWE-502

Related Identifiers

CVE-2017-3201

Affected Products

Flamingo Amf-Serializer

References · 6

• 🔥 https://codewhitesec.blogspot.com/2017/04/amf.html · Exploit
• https://osv.dev/vulnerability/CVE-2017-3201 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2017-3201 · Security Note
• http://securityweek.com/flaws-java-amf-libraries-allow-remote-code-execution · Note
• http://securityfocus.com/bid/97380 · Note
• https://kb.cert.org/vuls/id/307983 · Note