XML Denial of Service in Feedgen library for Python



Published: 2020-02-03
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2020-5227
CWE-ID CWE-400
Exploitation vector Network
Public exploit N/A
Vulnerable software
Subscribe 		Feedgenerator
Universal components / Libraries / Libraries used by multiple products

Vendor Lars Kiesow

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Resource exhaustion

EUVDB-ID: #VU24823

Risk: Medium

CVSSv3.1:

CVE-ID: CVE-2020-5227

CWE-ID: CWE-400 - Resource exhaustion

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied XML input. A remote attacker can trigger resource exhaustion and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Feedgenerator: 0.1 - 0.8.0

CPE2.3 External links

http://docs.microsoft.com/en-us/archive/msdn-magazine/2009/november/xml-denial-of-service-attacks-and-defenses
http://github.com/lkiesow/python-feedgen/commit/f57a01b20fa4aaaeccfa417f28e66b4084b9d0cf
http://github.com/lkiesow/python-feedgen/security/advisories/GHSA-g8q7-xv52-hf9f


Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?



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