Логотип exploitDog
Консоль
Логотип exploitDog

exploitDog

suse-cvrf логотип

SUSE-SU-2026:2645-1

Опубликовано: 26 июн. 2026
Источник: suse-cvrf

Описание

Security update for dovecot22

This update for dovecot22 fixes the following issues

  • CVE-2026-33603: login: base64 input can contain tabs that bypass IPC protection (bsc#1265147).
  • CVE-2026-40020: IMAP folders can be shared-spammed to everyone (bsc#1265149).
  • CVE-2026-42006: imap-login: uncontrolled memory usage with excessive bracing over IMAP (bsc#1265150).

Список пакетов

SUSE Linux Enterprise Server 12 SP5-LTSS
dovecot22-2.2.31-19.37.2
dovecot22-backend-mysql-2.2.31-19.37.2
dovecot22-backend-pgsql-2.2.31-19.37.2
dovecot22-backend-sqlite-2.2.31-19.37.2
dovecot22-devel-2.2.31-19.37.2
SUSE Linux Enterprise Server LTSS Extended Security 12 SP5
dovecot22-2.2.31-19.37.2
dovecot22-backend-mysql-2.2.31-19.37.2
dovecot22-backend-pgsql-2.2.31-19.37.2
dovecot22-backend-sqlite-2.2.31-19.37.2
dovecot22-devel-2.2.31-19.37.2

Ссылки

Описание

Attacker can use a specially crafted base64 exchange between Dovecot and Client to fake SCRAM TLS channel binding. This requires that the attacker is able to position itself between Dovecot and the client connection. If successful, the attacker can eavesdrop communications between Dovecot and client as MITM proxy. Install fixed version. No publicly available exploits are known.

Затронутые продукты
SUSE Linux Enterprise Server 12 SP5-LTSS:dovecot22-2.2.31-19.37.2
SUSE Linux Enterprise Server 12 SP5-LTSS:dovecot22-backend-mysql-2.2.31-19.37.2
SUSE Linux Enterprise Server 12 SP5-LTSS:dovecot22-backend-pgsql-2.2.31-19.37.2
SUSE Linux Enterprise Server 12 SP5-LTSS:dovecot22-backend-sqlite-2.2.31-19.37.2
Ссылки

Описание

Attacker can use the IMAP SETACL command to inject the anyone permission to user's dovecot-acl file even if imap_acl_allow_anyone=no. This causes folders to be spammed to all users. The impact is limited to being able to spam folders to other users, no unexpected access is gained. Install to fixed version. No publicly available exploits are known.

Затронутые продукты
SUSE Linux Enterprise Server 12 SP5-LTSS:dovecot22-2.2.31-19.37.2
SUSE Linux Enterprise Server 12 SP5-LTSS:dovecot22-backend-mysql-2.2.31-19.37.2
SUSE Linux Enterprise Server 12 SP5-LTSS:dovecot22-backend-pgsql-2.2.31-19.37.2
SUSE Linux Enterprise Server 12 SP5-LTSS:dovecot22-backend-sqlite-2.2.31-19.37.2
Ссылки

Описание

An attacker can cause uncontrolled memory usage with excessive bracing over IMAP. The fix in CVE-2026-27857 was incomplete, only blocking one way of doing this, so there was still another way left open. In particular, the fix was for closing braces, but you could still use open braces to bypass the limit. Using excessive bracing, attacker can cause memory usage up to configured memory limit. Install fixed version, or configure vsz_limit for imap process to low value. No publicly available exploits are known.

Затронутые продукты
SUSE Linux Enterprise Server 12 SP5-LTSS:dovecot22-2.2.31-19.37.2
SUSE Linux Enterprise Server 12 SP5-LTSS:dovecot22-backend-mysql-2.2.31-19.37.2
SUSE Linux Enterprise Server 12 SP5-LTSS:dovecot22-backend-pgsql-2.2.31-19.37.2
SUSE Linux Enterprise Server 12 SP5-LTSS:dovecot22-backend-sqlite-2.2.31-19.37.2
Ссылки