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GHSA-8c28-5mp7-v24hmedium5.9

TYPO3 CMS vulnerable to Denial of Service in Page Error Handling

Impact

Requesting invalid or non-existing resources via HTTP triggers the page error handler, which again could retrieve content to be shown as an error message from another page. This leads to a scenario in which the application is calling itself recursively - amplifying the impact of the initial attack until the limits of the web server are exceeded.

Source excerpt · OSV

Affected packages

Start with the recorded fix for your release branch. Check your installed version and test compatibility before upgrading. Fixing this advisory does not rule out other vulnerabilities in the release.

typo3/cms-core Packagist
Affected rangeRecorded fix
From 9.0.0 before 9.5.38Ecosystem versions9.5.38
From 10.0.0 before 10.4.33Ecosystem versions10.4.33
From 11.0.0 before 11.5.20Ecosystem versions11.5.20

Version evidence: OSV · GHSA-8c28-5mp7-v24h

View original version evidence (109 explicit versions)
typo3/cms Packagist
Affected rangeRecorded fix
From 10.0.0 before 10.4.33Ecosystem versions10.4.33
From 11.0.0 before 11.5.20Ecosystem versions11.5.20

Version evidence: OSV · GHSA-8c28-5mp7-v24h

View original version evidence (68 explicit versions)

Original source description

Problem

Requesting invalid or non-existing resources via HTTP triggers the page error handler, which again could retrieve content to be shown as an error message from another page. This leads to a scenario in which the application is calling itself recursively - amplifying the impact of the initial attack until the limits of the web server are exceeded.

This vulnerability is very similar, but not identical, to the one described in TYPO3-CORE-SA-2021-005 (CVE-2021-21359).

Solution

Update to TYPO3 versions 9.5.38 ELTS, 10.4.33 or 11.5.20 that fix the problem described above.

References

References