CVE-2023-28853

Mastodon's blind LDAP injection in login allows the attacker to leak arbitrary attributes from LDAP database

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.

Affected

mastodon

CVSS v3.1 NVD

6.5 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

CVSS v3.1 GITHUB

7.7 HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

EPSS

1.28% chance of exploitation in the next 30 days, 70th percentile

Published

2023-04-04

Updated

2025-02-13

Proof-of-concept exploits (1)

• mastodon/mastodon/security/advisories/GHSA-38g9-pfm9-gfqv

Security advisories

• mastodon/mastodon/pull/24379

References

• CVE Record
• NVD entry