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CVE-2020-12673

Status Candidate

Overview

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.

Related Files

Red Hat Security Advisory 2020-3736-01
Posted Sep 14, 2020
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2020-3736-01 - Dovecot is an IMAP server for Linux and other UNIX-like systems, written primarily with security in mind. It also contains a small POP3 server, and supports e-mail in either the maildir or mbox format. The SQL drivers and authentication plug-ins are provided as subpackages. Issues addressed include a resource exhaustion vulnerability.

tags | advisory, imap
systems | linux, redhat, unix
advisories | CVE-2020-12100, CVE-2020-12673, CVE-2020-12674
MD5 | 3e3c00406687bdd7544bee5ae76b9d62
Red Hat Security Advisory 2020-3735-01
Posted Sep 14, 2020
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2020-3735-01 - Dovecot is an IMAP server for Linux and other UNIX-like systems, written primarily with security in mind. It also contains a small POP3 server, and supports e-mail in either the maildir or mbox format. The SQL drivers and authentication plug-ins are provided as subpackages. Issues addressed include a resource exhaustion vulnerability.

tags | advisory, imap
systems | linux, redhat, unix
advisories | CVE-2020-12100, CVE-2020-12673, CVE-2020-12674
MD5 | b7913dbe9054d87ddd3386a326e526fa
Red Hat Security Advisory 2020-3713-01
Posted Sep 10, 2020
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2020-3713-01 - Dovecot is an IMAP server for Linux and other UNIX-like systems, written primarily with security in mind. It also contains a small POP3 server, and supports e-mail in either the maildir or mbox format. The SQL drivers and authentication plug-ins are provided as subpackages. Issues addressed include a resource exhaustion vulnerability.

tags | advisory, imap
systems | linux, redhat, unix
advisories | CVE-2020-12100, CVE-2020-12673, CVE-2020-12674
MD5 | a1345c86b05742f8a013f28048e4fc0d
Gentoo Linux Security Advisory 202009-02
Posted Sep 7, 2020
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 202009-2 - Multiple vulnerabilities have been found in Dovecot, the worst of which could allow remote attackers to cause a Denial of Service condition. Versions less than 2.3.11.3 are affected.

tags | advisory, remote, denial of service, vulnerability
systems | linux, gentoo
advisories | CVE-2020-12100, CVE-2020-12673, CVE-2020-12674
MD5 | ebcfd57317df8fe31dcaca1f536069ba
Red Hat Security Advisory 2020-3617-01
Posted Sep 3, 2020
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2020-3617-01 - Dovecot is an IMAP server for Linux and other UNIX-like systems, written primarily with security in mind. It also contains a small POP3 server, and supports e-mail in either the maildir or mbox format. The SQL drivers and authentication plug-ins are provided as subpackages. Issues addressed include a resource exhaustion vulnerability.

tags | advisory, imap
systems | linux, redhat, unix
advisories | CVE-2020-12100, CVE-2020-12673, CVE-2020-12674
MD5 | 1a75e2e2a4466de0bd08ae5835cebf26
Ubuntu Security Notice USN-4456-2
Posted Aug 17, 2020
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4456-2 - USN-4456-1 fixed several vulnerabilities in Dovecot. This update provides the corresponding update for Ubuntu 14.04 ESM. It was discovered that Dovecot incorrectly handled deeply nested MIME parts. A remote attacker could possibly use this issue to cause Dovecot to consume resources, resulting in a denial of service. Various other issues were also addressed.

tags | advisory, remote, denial of service, vulnerability
systems | linux, ubuntu
advisories | CVE-2020-12100, CVE-2020-12673, CVE-2020-12674
MD5 | 37e3fb4660496bc29f37e884ad2c76db
Ubuntu Security Notice USN-4456-1
Posted Aug 12, 2020
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4456-1 - It was discovered that Dovecot incorrectly handled deeply nested MIME parts. A remote attacker could possibly use this issue to cause Dovecot to consume resources, resulting in a denial of service. It was discovered that Dovecot incorrectly handled memory when using NTLM. A remote attacker could possibly use this issue to cause Dovecot to crash, resulting in a denial of service. It was discovered that the Dovecot RPA mechanism incorrectly handled zero-length messages. A remote attacker could possibly use this issue to cause Dovecot to crash, resulting in a denial of service. Various other issues were also addressed.

tags | advisory, remote, denial of service
systems | linux, ubuntu
advisories | CVE-2020-12100, CVE-2020-12673, CVE-2020-12674
MD5 | 575687b073f155d6229f47d4d093a9f3
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