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Publicly accessible birthdays

Moderate
pingiun published GHSA-h8gg-5923-2vmc Nov 23, 2022

Package

No package listed

Affected versions

v35 and higher

Patched versions

v44 and higher

Description

The birthday (date and month, but not year) and name of people that allowed their birthday to be displayed to other members, might have been available to non-members via the API on /api/calendarjs/birthdays. This indirectly also shows that this person has been a member.

Impact

Low

Who are affected

Members that have had the ‘Show your birthday to other members on your profile page and in the birthday calendar’ option enabled on their profile.

Patches

This problem exists since aff25b0 which was released in v35 on March 1st 2021. This is fixed in the v44 release of the website, released November 23rd 2022.

Workarounds

  • Disabling the display birthday feature for all member profiles
  • Block the /api/calendarjs/birthdays route on webserver level

For more information

If you have any questions or comments about this advisory:

Severity

Moderate

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

CVE ID

No known CVE

Weaknesses

No CWEs

Credits