> JapanHacked_
[Resolved][Severity: Major][Misconfiguration]

Kyoto University: a configuration mistake in the authentication system for staff and students left the names, mail addresses, IDs and hashed passwords of 40,751 people viewable from outside

A setting mistake made when the system was revised in early June 2020 left the data viewable from outside until January 4, 2021. No sign of access has been found.

Disclosed

2021-01-26

Organizations involved

1

Leaked or at risk

40.8K

40,751

Downtime

Unknown

What happened

  1. A staff member noticed a fault in the course of work. [1]

A setting was wrong when the authentication system used by staff and students was revised in early June 2020. As a result, from then until January 4, 2021, the names, mail addresses, IDs and hashed passwords of 40,751 people (27,861 students and 12,890 staff) could be viewed from outside. [1]

Response

The university fixed the setting and is having the people concerned change their passwords. It said it found no sign that the exposed information was accessed from outside. [1]

Timeline

  1. Detected 2021-01-04
  2. Disclosed 2021-01-26
  3. 22 days

Attack or cause

Method
[Misconfiguration]
Impact
[Data leak]
Entry point
Web app

Data exposed or at risk

[Name][E-mail address][Passwords]

Organizations involved

Open in organization search

Sources

  1. [1][News]認証システムの個人情報が外部閲覧可能に - 京大Security NEXT · 2021-01-26