GitHub Advisoryadvisory · Packagist
GHSA-q9cp-mc96-m4w2 XML External Entity in Dashboard Widget
LOW
Official page ↗
- Aliases
- CVE-2020-26229
- Ecosystem
- Packagist
- Packages
- typo3/cms-core, typo3/cms
- Severity
- Low
- CVSS vector
- CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:N/A:L
- Weaknesses
- CWE-611
- Reviewed
- 2020-11-23
Affected packages
• Packagist typo3/cms-core: >= 10.0.0, < 10.4.10 → fixed in 10.4.10
• Packagist typo3/cms: >= 10.0.0, < 10.4.10 → fixed in 10.4.10
Description
Problem
It has been discovered that RSS widgets are susceptible to XML external entity processing.
This vulnerability is reasonable, but is theoretical - it was not possible to actually reproduce the vulnerability with current PHP versions of supported and maintained system distributions.
At least with _libxml2_ version 2.9, the processing of XML external entities is disabled per default - and cannot be exploited. Besides that, a valid backend user account is needed.
Solution
Update to TYPO3 version 10.4.10 that fixes the problem described.
Related
Alias · CVE (1)
- CVE-2020-26229 TYPO3 is an open source PHP based web content management system. vulnerability
Weakness · CWE (1)
- CWE-611 Improper Restriction of XML External Entity Reference weakness
References
- https://github.com/TYPO3/TYPO3.CMS/security/advisories/GHSA-q9cp-mc96-m4w2 web
- https://nvd.nist.gov/vuln/detail/CVE-2020-26229 advisory
- https://github.com/FriendsOfPHP/security-advisories/blob/master/typo3/cms-core/CVE-2020-26229.yaml web
- https://github.com/FriendsOfPHP/security-advisories/blob/master/typo3/cms/CVE-2020-26229.yaml web
- https://typo3.org/security/advisory/typo3-core-sa-2020-012 web