CVE-2020-5227 Feedgen Vulnerable to XML Denial of Service Attacks

2020-01-2822:40:14

CWE-776

GitHub_M

www.cve.org

4.4 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

HIGH

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H

0.003 Low

EPSS

Percentile

68.6%

JSON

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.

CNA Affected

[
  {
    "product": "python-feedgen",
    "vendor": "lkiesow",
    "versions": [
      {
        "status": "affected",
        "version": "< 0.9.0"
      }
    ]
  }
]