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CVE-2020-11991: Improper Restriction of XML External Entity Reference

September 11, 2020 (updated September 17, 2020)

When using the StreamGenerator, the code parse a user-provided XML. A specially crafted XML, including external system entities, could be used to access any file on the server system.

References

  • lists.apache.org/thread.html/r77add973ea521185e1a90aca00ba9dae7caa8d8b944d92421702bb54%40%3Cusers.cocoon.apache.org%3E
  • nvd.nist.gov/vuln/detail/CVE-2020-11991

Code Behaviors & Features

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Affected versions

All versions starting from 2.1 up to 2.1.12

Fixed versions

  • 2.1.13

Solution

Upgrade to version 2.1.13 or above.

Impact 7.5 HIGH

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

Learn more about CVSS

Weakness

  • CWE-611: Improper Restriction of XML External Entity Reference

Source file

maven/org.apache.cocoon/cocoon/CVE-2020-11991.yml

Spotted a mistake? Edit the file on GitLab.

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