PT-2018-7252 · Pivotal/Spring · Spring-Flex

Published 2018-06-11 · Updated 2022-05-13 · CVE-2017-3203

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: Pivotal/Spring Spring-flex (affected versions not specified)

Description: The issue concerns the Java implementations of AMF3 deserializers in Pivotal/Spring Spring-flex, which derive class instances from java.io.Externalizable instead of following the AMF3 specification's recommendation of flash.utils.IExternalizable. This could allow a remote attacker, who has the ability to spoof or control an RMI server connection, to send serialized Java objects that execute arbitrary code when deserialized.

Recommendations: At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Deserialization of Untrusted Data

Weakness Enumeration

CWE-502

Related Identifiers

CVE-2017-3203

GHSA-8V4H-J42H-WFHC

Affected Products

Spring-Flex

References · 7

• 🔥 https://codewhitesec.blogspot.com/2017/04/amf.html · Exploit
• https://osv.dev/vulnerability/CVE-2017-3203 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2017-3203 · Security Note
• https://osv.dev/vulnerability/GHSA-8v4h-j42h-wfhc · Vendor Advisory
• http://securityweek.com/flaws-java-amf-libraries-allow-remote-code-execution · Note
• https://kb.cert.org/vuls/id/307983 · Note
• https://securityfocus.com/bid/97376 · Note