Vulnerability identifier: #VU7241

Vulnerability risk: Low

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2016-9063

CWE-ID: CWE-190

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
expat
Universal components / Libraries / Libraries used by multiple products

Vendor: libexpat.org

Description
The vulnerability allows a remote attacker to cause DoS condition on the target system.

The weakness exists due to an integer overflow when handling malicious XML files. A remote attacker can send manipulated XML content, trick the victim into opening it and cause the application using the Expat library to crash.

Successful exploitation of the vulnerability results in denial of service.

Mitigation
Update to version 2.2.1.

Vulnerable software versions

expat: 1.95.0 - 2.2.0

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External links
http://python-security.readthedocs.io/vuln/cve-2017-9233_expat_2.2.1.html

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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.