Vulnerabilities fixed in Dovecot

Dovecot's developers have fixed two vulnerabilities. An authenticated remote malicious person can exploit the vulnerabilities exploit them to cause a denial-of-service, execute execute commands with application privileges or to obtain sensitive data. -= Ubuntu =- Canonical has made updates...

Ubuntu: Security Advisory (USN-4993-1)

The remote host is missing an update for the SPDX-FileCopyrightText: 2021 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...

CVE-2021-29157

A flaw was found in dovecot where it did not properly parse the kid and azp fields in JWT tokens. This flaw allows a local attacker to bypass dovecot's authentication, and access a user's emails. The highest threat from this vulnerability is to confidentiality and integrity...

CVE-2021-33515

It was found that dovecot could still accept plaintext commands while the STARTTLS negotiation process is ongoing. This could allow an active person in the middle, with valid credentials on dovecot, to, for example, steal confidential data such as the client's emails and passwords...

CVE-2020-28200

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...

USN-4993-1: Dovecot vulnerabilities

Kirin discovered that Dovecot incorrectly escaped kid and azp fields in JWT tokens. A local attacker could possibly use this issue to validate tokens using arbitrary keys. This issue only affected Ubuntu 20.10 and Ubuntu 21.04. CVE-2021-29157 Fabian Ising and Damian Poddebniak discovered that...

USN-4993-1 dovecot vulnerabilities

Kirin discovered that Dovecot incorrectly escaped kid and azp fields in JWT tokens. A local attacker could possibly use this issue to validate tokens using arbitrary keys. This issue only affected Ubuntu 20.10 and Ubuntu 21.04. CVE-2021-29157 Fabian Ising and Damian Poddebniak discovered that...

CVE-2020-28200

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-2021-33515

The submission service in Dovecot before 2.3.15 allows STARTTLS command injection in lib-smtp. Sensitive information can be redirected to an attacker-controlled address...

UBUNTU-CVE-2020-28200

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-2021-29157

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...

UBUNTU-CVE-2021-33515

The submission service in Dovecot before 2.3.15 allows STARTTLS command injection in lib-smtp. Sensitive information can be redirected to an attacker-controlled address...

Dovecot 路径遍历漏洞

Dovecot is an open source IMAP and POP3 mail server based on Linux/UNIX-like systems. A path traversal vulnerability exists in Dovecot versions prior to 2.3.15, where an attacker with privileged access to the local filesystem can trick OAuth2 authentication into using an HS256 authentication key...

Dovecot 资源管理错误漏洞

Dovecot is an open source IMAP and POP3 mail server for Linux/UNIX-like systems. Dovecot suffers from a resource management error vulnerability that stems from improper management of internal resources in the Regular Expression Filtering extension. A remote attacker could pass specially crafted...

Ubuntu 20.04 LTS : Dovecot vulnerabilities (USN-4993-1)

The remote Ubuntu 20.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-4993-1 advisory. Kirin discovered that Dovecot incorrectly escaped kid and azp fields in JWT tokens. A local attacker could possibly use this issue to validate tokens usi...

Dovecot 命令注入漏洞

Dovecot is an open source IMAP and POP3 mail server for Linux/UNIX-like systems. A command injection vulnerability exists in the commit service of Dovecot versions prior to 2.3.15, which allows an attacker to inject STARTTLS commands into lib-smtp, where sensitive information can be redirected to...

PT-2021-3384 · Dovecot +3 · Dovecot +3

Name of the Vulnerable Software and Affected Versions: Dovecot versions prior to 2.3.15 Description: The issue is related to errors in resource management in the Dovecot mail server, which can be exploited by a remote attacker to cause a denial of service. The Sieve engine in Dovecot is affected,...

PT-2021-3385 · Dovecot +9 · Dovecot +9

Name of the Vulnerable Software and Affected Versions: Dovecot versions prior to 2.3.15 Description: The issue is related to the submission service in Dovecot, which allows STARTTLS command injection in lib-smtp. This can lead to sensitive information being redirected to an attacker-controlled...

PT-2021-3383 · Dovecot +4 · Dovecot +4

Name of the Vulnerable Software and Affected Versions: Dovecot versions prior to 2.3.15 Description: The issue allows for ../ Path Traversal, enabling an attacker with local filesystem access to trick OAuth2 authentication into using an HS256 validation key from an attacker-controlled location...

SUSE: Security Advisory (SUSE-SU-2021:0027-1)

The remote host is missing an update for the SPDX-FileCopyrightText: 2021 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...