CVE-2020-26229 Information

Description

TYPO3 is an open source PHP based web content management system. In TYPO3 from version 10.4.0 and before version 10.4.10 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. Update to TYPO3 version 10.4.10 to fix the problem described.

CVSS Vector

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

Reference

https://typo3.org/security/advisory/typo3-core-sa-2020-012 https://github.com/TYPO3/TYPO3.CMS/security/advisories/GHSA-q9cp-mc96-m4w2

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction Required

LOW

Scope

REQUIRED

Confidentiality Impact

UNCHANGED

Integrity Impact

LOW

Availability Impact

NONE

Base Score

LOW

Base Severity

3.7