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CVE-2023-28853

Date: April 4, 2023

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.

Language: JS

Severity Score

Related Resources (10)

http://www.openwall.com/lists/oss-security/2023/07/06/6
https://nvd.nist.gov/vuln/detail/CVE-2023-28853
https://github.com/mastodon/mastodon/blob/94cbd808b5b3e7999c7e77dc724b7e8c9dd2bdec/app/models/concerns/ldap_authenticable.rb#L7-L14
https://github.com/mastodon/mastodon/blob/94cbd808b5b3e7999c7e77dc724b7e8c9dd2bdec/config/initializers/devise.rb#L398-L414
https://github.com/mastodon/mastodon/pull/24379
https://github.com/mastodon/mastodon/releases/tag/v4.0.4
https://github.com/mastodon/mastodon/releases/tag/v4.1.2
https://github.com/mastodon/mastodon/security/advisories/GHSA-38g9-pfm9-gfqv
https://github.com/mastodon/mastodon/releases/tag/v3.5.8
https://www.mend.io/vulnerability-database/CVE-2023-28853

Severity Score

Weakness Type (CWE)

Improper Neutralization of Special Elements used in an LDAP Query ('LDAP Injection')

CWE-90

Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')

CWE-74

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): CHANGED
Confidentiality (C): HIGH
Integrity (I): NONE
Availability (A): NONE

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