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Date: Thu, 16 Jan 2020 08:59:51 +0000
From: <cert.cc@...nge.com>
To: "oss-security@...ts.openwall.com" <oss-security@...ts.openwall.com>
Subject: [CVE-2019-17570] xmlrpc-common untrusted deserialization
Description
===========
Java untrusted deserialization in faultCause when processing an XMLRPC response. XMLRPC clients are thus targeted by this vulnerability, and rogue XMLRPC servers may gain arbitrary code execution on the XMLRPC client.
The vulnerability lays in the org.apache.xmlrpc.parser.XmlRpcResponseParser:addResult(Object) method.
This vulnerability is different from CVE-2016-5003, which uses ex:serializable type to perform deserialization. This new vulnerability only affects XMLRPC clients, which will receive response, possible faults. It is exploitable in default configuration.
Exploitation technique
======================
REMOTE, NONE AUTHENTICATION REQUIRED.
REMINDER: This vulnerability is on client-side.
CVSSv3 base score : 9.8
=================
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Impact(s)
=========
An attacker may execute arbitrary code by using a gadget chain.
Affected versions
=================
Detected on XMLRPC-common-Central-3.1.3 but applies to versions (non-exhaustive list):
* Redhat GA 3.1.3-redhat-5
* Redhat GA 3.1.3-redhat-2
* Redhat EA 3.1.3-redhat-1
* Central 3.1.3
* Central 3.1.2
* Central 3.1.1
* Central 3.1
NOTE: Central 3.0.x are not vulnerable
CVE Id
==========
CVE-2019-17570
Timeline
========
2019-11-19: Apache informed via email
2019-11-19: Apache XML-RPC is no longer actively maintained
2019-11-21: Red Hat informed via email
2019-11-22: Vulnerability reaffected to Apache project
2020-01-06: Distro OSS security informed via email
2020-01-16: Vulnerability published to OSS security mailing list
Credits
========
Guillaume TEISSIER (Orange)
Orange group
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