Skip to content

User Enumeration via Response Timing

Moderate
ohader published GHSA-m392-235j-9r7r Sep 13, 2022

Package

composer typo3/cms-core (Composer)

Affected versions

7.0.0-7.6.57, 8.0.0-8.7.47, 9.0.0-9.5.36, 10.0.0-10.4.31, 11.0.0-11.5.15

Patched versions

7.6.58, 8.7.48, 9.5.37, 10.4.32, 11.5.16

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

Severity

Moderate
5.3
/ 10

CVSS base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

CVE ID

CVE-2022-36105

Weaknesses

Credits