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GHSA-m392-235j-9r7rmedium5.3

TYPO3 CMS vulnerable to User Enumeration via Response Timing

Impact

> Meta > CVSS: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:F/RL:O/RC:C (4.9)

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 7.0.0 before 7.6.58Ecosystem versions7.6.58
From 8.0.0 before 8.7.48Ecosystem versions8.7.48
From 9.0.0 before 9.5.37Ecosystem versions9.5.37
From 10.0.0 before 10.4.32Ecosystem versions10.4.32
From 11.0.0 before 11.5.16Ecosystem versions11.5.16

Version evidence: OSV · GHSA-m392-235j-9r7r

View original version evidence (130 explicit versions)
typo3/cms Packagist
Affected rangeRecorded fix
From 10.0.0 before 10.4.32Ecosystem versions10.4.32
From 11.0.0 before 11.5.16Ecosystem versions11.5.16

Version evidence: OSV · GHSA-m392-235j-9r7r

View original version evidence (63 explicit versions)

Original source description

Meta

  • CVSS: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:F/RL:O/RC:C (4.9)

Problem

It has been discovered that observing response time during user authentication (backend and frontend) can be used to distinguish between existing and non-existing user accounts.

Extension authors of 3rd party TYPO3 extensions providing a custom authentication service should check if the extension is affected by the described problem. Affected extensions must implement new MimicServiceInterface::mimicAuthUser, which simulates corresponding times regular processing would usually take.

Solution

Update to TYPO3 version 7.6.58 ELTS, 8.7.48 ELTS, 9.5.37 ELTS, 10.4.32 or 11.5.16 that fix the problem described above.

Credits

Thanks to Vautia who reported this issue and to TYPO3 core & security team members Oliver Hader who fixed the issue.

References

References