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  5. CVE-2021-41559

CVE-2021-41559: Quadratic blowup in Convert::xml2array()

June 28, 2022 (updated August 8, 2023)

Silverstripe silverstripe/framework has a quadratic blowup in Convert::xml2array() that enables a remote attack via a crafted XML document.

References

  • github.com/FriendsOfPHP/security-advisories/blob/master/silverstripe/framework/CVE-2021-41559.yaml
  • github.com/advisories/GHSA-9fmg-89fx-r33w
  • github.com/silverstripe/silverstripe-framework/releases
  • nvd.nist.gov/vuln/detail/CVE-2021-41559
  • www.silverstripe.org/download/security-releases/
  • www.silverstripe.org/download/security-releases/cve-2021-41559

Code Behaviors & Features

Detect and mitigate CVE-2021-41559 with GitLab Dependency Scanning

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Affected versions

All versions before 4.10.9

Fixed versions

  • 4.10.9

Solution

Upgrade to version 4.10.9 or above.

Impact 6.5 MEDIUM

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

Learn more about CVSS

Weakness

  • CWE-776: Improper Restriction of Recursive Entity References in DTDs ('XML Entity Expansion')

Source file

packagist/silverstripe/framework/CVE-2021-41559.yml

Spotted a mistake? Edit the file on GitLab.

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