Two-factor Authentication (TFA): Weak Authentication
CVE-2024-13239 is a critical-severity weak authentication vulnerability in Two-factor Authentication (TFA) from Drupal, with a CVSS 3.1 base score of 9.8 out of 10. It can be exploited remotely over the network by an unauthenticated attacker, without any action from a user. The record lists version 1.5.0 as the first without the flaw, so updating Two-factor Authentication (TFA) to that release or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 0.58% chance of exploitation within 30 days, which is low compared with other CVEs.
Critical severity: a successful attack would have severe impact.
What to do
- Update Two-factor Authentication (TFA) to 1.5.0 or a later version.
- Update Two-factor Authentication to 8.x-1.5 or a later version.
- Read the advisory on drupal.org for workarounds and exact fixed builds.
- Until you can update, restrict network access to the affected service so it is not reachable from untrusted networks.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Drupal | Two-factor Authentication (TFA) | before 1.5.0 | 1.5.0 |
| Two-factor Authentication Project | Two-factor Authentication | before 8.x-1.5 | 8.x-1.5 |
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- NetworkCan be exploited remotely over a network, including the internet.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- NoneNo account or login is needed.
- User interaction
- NoneNo action by a victim is required.
- Scope
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- HighAll data handled by the component can be read.
- Integrity
- HighData or code can be modified at will.
- Availability
- HighThe component can be taken down completely.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. Scored by CISA (ADP).
Official description
Weak Authentication vulnerability in Drupal Two-factor Authentication (TFA) allows Authentication Abuse.This issue affects Two-factor Authentication (TFA): from 0.0.0 before 1.5.0.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Weak Authentication
The product uses an authentication mechanism to restrict access to specific users or identities, but the mechanism does not sufficiently prove that the claimed identity is correct.
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: yes, technical impact: total).
- Record last changed materially (score, affected products, status or references).
References
Advisories
Other vulnerabilities in Two-factor Authentication (TFA)
- 8.1 High severity
- 9.8 Critical severity
Recent Weak Authentication vulnerabilities
- 7.5 High severity
- 9.1 Critical severity
- 8.8 High severity
- 9.1 Critical severity
- 9.1 Critical severity
- 8.8 High severity
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