DLA-2328-1 dovecot - security update

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FreeBSD : mail/dovecot -- multiple vulnerabilities (87a07de1-e55e-4d51-bb64-8d117829a26a)

Aki Tuomi reports : Parsing mails with a large number of MIME parts could have resulted in excessive CPU usage or a crash due to running out of stack memory.. Dovecot's NTLM implementation does not correctly check message buffer size, which leads to reading past allocation which can lead to crash...

CVE-2020-12674

A flaw was found in dovecot. An attacker can use the way dovecot handles RPA Remote Passphrase Authentication to crash the authentication process repeatedly preventing login. The highest threat from this vulnerability is to system availability. Mitigation Upstream suggests that this flaw can be...

CVE-2020-12100

A flaw was found in dovecot. A remote attacker could cause a denial of service by repeatedly sending emails containing MIME parts containing malicious content of which dovecot will attempt to parse. The highest threat from this vulnerability is to system availability. Mitigation Upstream suggests...

CVE-2020-12673

A flaw was found in dovecot. An out-of-bounds read flaw was found in the way dovecot handled NTLM authentication allowing an attacker to crash the dovecot auth process repeatedly preventing login. The highest threat from this vulnerability is to system availability. Mitigation Upstream suggests...

Vulnerabilities fixed in Dovecot

Vulnerabilities have been fixed in Dovecot. The vulnerabilities allow a malicious person to cause a denial-of-service cause. Dovecot has released updates to fix the vulnerabilities. For more information, see the following pages: CVE-2020-12100:...

Debian: Security Advisory (DSA-4745-1)

The remote host is missing an update for the Debian SPDX-FileCopyrightText: 2020 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...

Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS : Dovecot vulnerabilities (USN-4456-1)

The remote Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-4456-1 advisory. It was discovered that Dovecot incorrectly handled deeply nested MIME parts. A remote attacker could possibly use this issue to...

Ubuntu: Security Advisory (USN-4456-1)

The remote host is missing an update for the SPDX-FileCopyrightText: 2020 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...

Dovecot 2.2 < 2.3.11.3 Multiple DoS Vulnerabilities

Dovecot is prone to multiple denial of service DoS vulnerabilities. SPDX-FileCopyrightText: 2020 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only CPE =...

Debian DSA-4745-1 : dovecot - security update

Several vulnerabilities have been discovered in the Dovecot email server. - CVE-2020-12100 Receiving mail with deeply nested MIME parts leads to resource exhaustion as Dovecot attempts to parse it. - CVE-2020-12673 Dovecot's NTLM implementation does not correctly check message buffer size, which...

CVE-2020-12100

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-2020-12673

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-2020-12674

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...

DEBIAN-CVE-2020-12100

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...

ALPINE-CVE-2020-12673

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

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...

ALPINE-CVE-2020-12674

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...

DEBIAN-CVE-2020-12673

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...

ALPINE-CVE-2020-12100

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...