Vulnerability identifier: #VU24686

Vulnerability risk: High

CVSSv3.1: 7.9 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C]

CVE-ID: CVE-2019-17570

CWE-ID: CWE-502

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
XML-RPC
Universal components / Libraries / Libraries used by multiple products

Vendor: Apache Foundation

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to insecure input validation when processing serialized data within the org.apache.xmlrpc.parser.XmlRpcResponseParser:addResult() method in Apache XML-RPC (aka ws-xmlrpc) library. A malicious XML-RPC server could target a XML-RPC client causing it to execute arbitrary code.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation
Install update from vendor's website.

Vulnerable software versions

XML-RPC: 1.2-b1 - 3.1.3

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External links
http://www.openwall.com/lists/oss-security/2020/01/24/2
http://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-17570;
http://lists.apache.org/thread.html/846551673bbb7ec8d691008215384bcef03a3fb004d2da845cfe88ee%401390230951%40%3Cdev.ws.apache.org%3E

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.