CVE-2020-5227
CVSS V2 Medium 5
CVSS V3 High 7.5
Description
Feedgen (python feedgen) before 0.9.0 is susceptible to XML Denial of Service attacks. The *feedgen* library allows supplying XML as content for some of the available fields. This XML will be parsed and integrated into the existing XML tree. During this process, feedgen is vulnerable to XML Denial of Service Attacks (e.g. XML Bomb). This becomes a concern in particular if feedgen is used to include content from untrused sources and if XML (including XHTML) is directly included instead of providing plain tex content only. This problem has been fixed in feedgen 0.9.0 which disallows XML entity expansion and external resources.
Overview
- CVE ID
- CVE-2020-5227
- Assigner
- security-advisories@github.com
- Vulnerability Status
- Modified
- Published Version
- 2020-01-28T23:15:12
- Last Modified Date
- 2020-02-08T04:15:12
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:a:feedgen_project:feedgen:*:*:*:*:*:python:*:* | 1 | OR | 0.9.0 |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:N/AC:L/Au:N/C:N/I:N/A:P
- Access Vector
- NETWORK
- Access Compatibility
- LOW
- Authentication
- NONE
- Confidentiality Impact
- NONE
- Integrity Impact
- NONE
- Availability Impact
- PARTIAL
- Base Score
- 5
- Severity
- MEDIUM
- Exploitability Score
- 10
- Impact Score
- 2.9
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Attack Vector
- NETWORK
- Attack Compatibility
- LOW
- Privileges Required
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- NONE
- Availability Impact
- HIGH
- Base Score
- 7.5
- Base Severity
- HIGH
- Exploitability Score
- 3.9
- Impact Score
- 3.6
References
| Reference URL | Reference Tags |
|---|---|
| https://github.com/lkiesow/python-feedgen/security/advisories/GHSA-g8q7-xv52-hf9f | Third Party Advisory |
| https://docs.microsoft.com/en-us/archive/msdn-magazine/2009/november/xml-denial-of-service-attacks-and-defenses | Exploit Patch Third Party Advisory Vendor Advisory |
| https://github.com/lkiesow/python-feedgen/commit/f57a01b20fa4aaaeccfa417f28e66b4084b9d0cf | Patch |
| https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/T6I5ENUYGFNMIH6ZQ62FZ6VU2WD3SIOI/ |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2020-5227 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-5227 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 16:50:33 | Added to TrackCVE | |||
| 2022-12-04 10:22:38 | 2020-01-28T23:15Z | 2020-01-28T23:15:12 | CVE Published Date | updated |
| 2022-12-04 10:22:38 | 2020-02-08T04:15:12 | CVE Modified Date | updated | |
| 2022-12-04 10:22:38 | Modified | Vulnerability Status | updated |