Vulnerabilities (CVE)

Filtered by vendor Dovecot Subscribe
Total 64 CVE
CVE Vendors Products Updated CVSS v2 CVSS v3
CVE-2021-29157 2 Dovecot, Fedoraproject 2 Dovecot, Fedora 2024-11-21 2.1 LOW 7.5 HIGH
Dovecot before 2.3.15 allows ../ Path Traversal. An attacker with access to the local filesystem can trick OAuth2 authentication into using an HS256 validation key from an attacker-controlled location. This occurs during use of local JWT validation with the posix fs driver.
CVE-2020-7957 2 Dovecot, Fedoraproject 2 Dovecot, Fedora 2024-11-21 5.0 MEDIUM 5.3 MEDIUM
The IMAP and LMTP components in Dovecot 2.3.9 before 2.3.9.3 mishandle snippet generation when many characters must be read to compute the snippet and a trailing > character exists. This causes a denial of service in which the recipient cannot read all of their messages.
CVE-2020-7046 2 Dovecot, Fedoraproject 2 Dovecot, Fedora 2024-11-21 7.8 HIGH 7.5 HIGH
lib-smtp in submission-login and lmtp in Dovecot 2.3.9 before 2.3.9.3 mishandles truncated UTF-8 data in command parameters, as demonstrated by the unauthenticated triggering of a submission-login infinite loop.
CVE-2020-28200 2 Dovecot, Fedoraproject 2 Dovecot, Fedora 2024-11-21 4.0 MEDIUM 4.3 MEDIUM
The Sieve engine in Dovecot before 2.3.15 allows Uncontrolled Resource Consumption, as demonstrated by a situation with a complex regular expression for the regex extension.
CVE-2020-25275 3 Debian, Dovecot, Fedoraproject 3 Debian Linux, Dovecot, Fedora 2024-11-21 5.0 MEDIUM 7.5 HIGH
Dovecot before 2.3.13 has Improper Input Validation in lda, lmtp, and imap, leading to an application crash via a crafted email message with certain choices for ten thousand MIME parts.
CVE-2020-24386 3 Debian, Dovecot, Fedoraproject 3 Debian Linux, Dovecot, Fedora 2024-11-21 4.9 MEDIUM 6.8 MEDIUM
An issue was discovered in Dovecot before 2.3.13. By using IMAP IDLE, an authenticated attacker can trigger unhibernation via attacker-controlled parameters, leading to access to other users' email messages (and path disclosure).
CVE-2020-12674 4 Canonical, Debian, Dovecot and 1 more 4 Ubuntu Linux, Debian Linux, Dovecot and 1 more 2024-11-21 5.0 MEDIUM 7.5 HIGH
In Dovecot before 2.3.11.3, sending a specially formatted RPA request will crash the auth service because a length of zero is mishandled.
CVE-2020-12673 4 Canonical, Debian, Dovecot and 1 more 4 Ubuntu Linux, Debian Linux, Dovecot and 1 more 2024-11-21 5.0 MEDIUM 7.5 HIGH
In Dovecot before 2.3.11.3, sending a specially formatted NTLM request will crash the auth service because of an out-of-bounds read.
CVE-2020-12100 4 Canonical, Debian, Dovecot and 1 more 4 Ubuntu Linux, Debian Linux, Dovecot and 1 more 2024-11-21 5.0 MEDIUM 7.5 HIGH
In Dovecot before 2.3.11.3, uncontrolled recursion in submission, lmtp, and lda allows remote attackers to cause a denial of service (resource consumption) via a crafted e-mail message with deeply nested MIME parts.
CVE-2020-10967 1 Dovecot 1 Dovecot 2024-11-21 5.0 MEDIUM 5.3 MEDIUM
In Dovecot before 2.3.10.1, remote unauthenticated attackers can crash the lmtp or submission process by sending mail with an empty localpart.
CVE-2020-10958 1 Dovecot 1 Dovecot 2024-11-21 5.0 MEDIUM 5.3 MEDIUM
In Dovecot before 2.3.10.1, a crafted SMTP/LMTP message triggers an unauthenticated use-after-free bug in submission-login, submission, or lmtp, and can lead to a crash under circumstances involving many newlines after a command.
CVE-2020-10957 1 Dovecot 1 Dovecot 2024-11-21 5.0 MEDIUM 7.5 HIGH
In Dovecot before 2.3.10.1, unauthenticated sending of malformed parameters to a NOOP command causes a NULL Pointer Dereference and crash in submission-login, submission, or lmtp.
CVE-2019-7524 4 Canonical, Debian, Dovecot and 1 more 4 Ubuntu Linux, Debian Linux, Dovecot and 1 more 2024-11-21 7.2 HIGH 8.8 HIGH
In Dovecot before 2.2.36.3 and 2.3.x before 2.3.5.1, a local attacker can cause a buffer overflow in the indexer-worker process, which can be used to elevate to root. This occurs because of missing checks in the fts and pop3-uidl components.
CVE-2019-3814 3 Canonical, Dovecot, Opensuse 3 Ubuntu Linux, Dovecot, Leap 2024-11-21 4.9 MEDIUM 7.7 HIGH
It was discovered that Dovecot before versions 2.2.36.1 and 2.3.4.1 incorrectly handled client certificates. A remote attacker in possession of a valid certificate with an empty username field could possibly use this issue to impersonate other users.
CVE-2019-19722 2 Dovecot, Fedoraproject 2 Dovecot, Fedora 2024-11-21 5.0 MEDIUM 5.3 MEDIUM
In Dovecot before 2.3.9.2, an attacker can crash a push-notification driver with a crafted email when push notifications are used, because of a NULL Pointer Dereference. The email must use a group address as either the sender or the recipient.
CVE-2019-11500 3 Debian, Dovecot, Fedoraproject 4 Debian Linux, Dovecot, Pigeonhole and 1 more 2024-11-21 7.5 HIGH 9.8 CRITICAL
In Dovecot before 2.2.36.4 and 2.3.x before 2.3.7.2 (and Pigeonhole before 0.5.7.2), protocol processing can fail for quoted strings. This occurs because '\0' characters are mishandled, and can lead to out-of-bounds writes and remote code execution.
CVE-2019-11499 3 Dovecot, Fedoraproject, Opensuse 3 Dovecot, Fedora, Leap 2024-11-21 5.0 MEDIUM 7.5 HIGH
In the IMAP Server in Dovecot 2.3.3 through 2.3.5.2, the submission-login component crashes if AUTH PLAIN is attempted over a TLS secured channel with an unacceptable authentication message.
CVE-2019-11494 3 Dovecot, Fedoraproject, Opensuse 3 Dovecot, Fedora, Leap 2024-11-21 5.0 MEDIUM 7.5 HIGH
In the IMAP Server in Dovecot 2.3.3 through 2.3.5.2, the submission-login service crashes when the client disconnects prematurely during the AUTH command.
CVE-2019-10691 2 Dovecot, Opensuse 2 Dovecot, Leap 2024-11-21 5.0 MEDIUM 7.5 HIGH
The JSON encoder in Dovecot before 2.3.5.2 allows attackers to repeatedly crash the authentication service by attempting to authenticate with an invalid UTF-8 sequence as the username.
CVE-2017-2669 2 Debian, Dovecot 2 Debian Linux, Dovecot 2024-11-21 5.0 MEDIUM 3.7 LOW
Dovecot before version 2.2.29 is vulnerable to a denial of service. When 'dict' passdb and userdb were used for user authentication, the username sent by the IMAP/POP3 client was sent through var_expand() to perform %variable expansion. Sending specially crafted %variable fields could result in excessive memory usage causing the process to crash (and restart), or excessive CPU usage causing all authentications to hang.