Описание
If auth_username_chars is empty, it is possible to inject arbitrary LDAP filter to Dovecot's LDAP authentication. This leads to potentially bypassing restrictions and allows probing of LDAP structure. Do not clear out auth_username_chars, or install fixed version. No publicly available exploits are known.
Пакеты
| Пакет | Статус | Версия исправления | Релиз | Тип |
|---|---|---|---|---|
| dovecot | fixed | 1:2.4.3+dfsg1-1 | package | |
| dovecot | fixed | 1:2.4.1+dfsg1-6+deb13u4 | trixie | package |
| dovecot | not-affected | bookworm | package | |
| dovecot | not-affected | bullseye | package |
Примечания
https://dovecot.org/mailman3/archives/list/dovecot-news@dovecot.org/thread/IKIHZX77IPTGSP5WBIPJUOFBUQFKVPE7/
https://documentation.open-xchange.com/dovecot/security/advisories/html/2026/oxdc-adv-2026-0001.html#cve-2026-27860-v2-4-v3-1-regression-auth-ldap-is-not-escaping-usernames
Fixed by: https://github.com/dovecot/core/commit/e2d8ef1ee04662e391e06ae76da1e7216c3a1fd3 (2.4.3)
Fixed by: https://github.com/dovecot/core/commit/6a8f2daf15727a36488252efc184dacaa7652cd2 (2.4.3)
Fixed by: https://github.com/dovecot/core/commit/34fbd3956db7f0ab1aefccb7750b4ec984681fa8 (2.4.3)
Fixed by: https://github.com/dovecot/core/commit/0e1f5abbbb27d7f8a485cd1c6a5673be995025a4 (2.4.3)
Fixed by: https://github.com/dovecot/core/commit/74a6f1612e7732026e69e8d8489291842df68589 (2.4.3)
Fixed by: https://github.com/dovecot/core/commit/25c34e50848155786d9a00eef6c310502f94e70f (2.4.3)
Fixed by: https://github.com/dovecot/core/commit/4049b0a8d5b6ca5c2cbcaadb9b5e81c3cce25044 (2.4.3)
EPSS
Связанные уязвимости
If auth_username_chars is empty, it is possible to inject arbitrary LDAP filter to Dovecot's LDAP authentication. This leads to potentially bypassing restrictions and allows probing of LDAP structure. Do not clear out auth_username_chars, or install fixed version. No publicly available exploits are known.
If auth_username_chars is empty, it is possible to inject arbitrary LDAP filter to Dovecot's LDAP authentication. This leads to potentially bypassing restrictions and allows probing of LDAP structure. Do not clear out auth_username_chars, or install fixed version. No publicly available exploits are known.
If auth_username_chars is empty, it is possible to inject arbitrary LDAP filter to Dovecot's LDAP authentication. This leads to potentially bypassing restrictions and allows probing of LDAP structure. Do not clear out auth_username_chars, or install fixed version. No publicly available exploits are known.
If auth_username_chars is empty, it is possible to inject arbitrary LDAP filter to Dovecot's LDAP authentication. This leads to potentially bypassing restrictions and allows probing of LDAP structure. Do not clear out auth_username_chars, or install fixed version. No publicly available exploits are known.
EPSS