Mastodon is a free, open-source social network server based on ActivityPub Mastodon allows configuration of LDAP for authentication. Starting in version 2.5.0 and prior to versions 3.5.8, 4.0.4, and 4.1.2, the LDAP query made during login is insecure and the attacker can perform LDAP injection attack to leak arbitrary attributes from LDAP database. This issue is fixed in versions 3.5.8, 4.0.4, and 4.1.2.

According to its self-reported version number, the version of Mastodon running on the remote host is 2.5.0 prior to 3.5.8 or 4.0.x prior to 4.0.4 or 4.1.x prior to 4.1.2. Therefore, it may be affected by a blind LDAP injection in login allows the attacker to leak arbitrary attributes from LDAP database.

Note that the scanner has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Type	Severity
114495	Mastodon 4.1.x < 4.1.2 LDAP injection	Web App Scanning	Component Vulnerability	Version Based	medium
114494	Mastodon 4.0.x < 4.0.4 LDAP injection	Web App Scanning	Component Vulnerability	Version Based	medium
114493	Mastodon 2.5.0 < 3.5.8 LDAP injection	Web App Scanning	Component Vulnerability	Version Based	medium

Detections

Analytics

CVE-2023-28853

medium

Tenable Plugins

medium

medium

medium