XML External Entity in Dashboard Widget
CVE-2020-26229

3.7LOW

Key Information:

Vendor

Typo3

Status
Typo3.cms
Vendor
CVE Published:
23 November 2020

What is CVE-2020-26229?

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.

Affected Version(s)

TYPO3.CMS >= 10.0.0, < 10.4.10

References

https://github.com/TYPO3/TYPO3.CMS/security/advisories/GH...
x_refsource_CONFIRM
https://typo3.org/security/advisory/typo3-core-sa-2020-012
x_refsource_MISC

CVSS V3.1

Score:
3.7
Severity:
LOW
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
Low
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.