TrueBooker – Appointment Booking and Scheduler System: account takeover
TrueBooker – Appointment Booking and Scheduler System
Account takeover in the TrueBooker – Appointment Booking and Scheduler System component. Threat level: Critical (CVSS 9.8).
Who is affected
This vulnerability affects: TrueBooker – Appointment Booking and Scheduler System. If you use this component on your site, check the version and update it as soon as possible.
How dangerous
Rating: Critical, CVSS 9.8 out of 10. Critical flaws are often exploited en masse within hours of disclosure.
What this flaw is
Account takeover lets an attacker seize an existing account (often an administrator), e.g. by changing the email address or resetting the password around the protections.
Losing the administrator account means losing control of the whole site and its users' data.
Score breakdown (CVSS vector)
What the CVSS 9.8 rating means in practice:
- The attack can be carried out remotely, over the internet.
- No login or account required.
- Requires no action from the victim.
- At risk: data confidentiality, integrity (data can be altered), site availability.
Weakness class: CWE-640.
What to do
- Update the vulnerable component (TrueBooker – Appointment Booking and Scheduler System) to the latest version.
- If a patch is not out yet, temporarily disable the vulnerable element.
- Check whether the site has already been attacked: unusual files, new administrator accounts, redirects.
- Make a backup before you start making changes.
Does this flaw affect your site?
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