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Sicherheit: Preisgabe von Informationen in Dovecot
Aktuelle Meldungen Distributionen
Name: Preisgabe von Informationen in Dovecot
ID: USN-3881-1
Distribution: Ubuntu
Plattformen: Ubuntu 14.04 LTS, Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, Ubuntu 18.10
Datum: Di, 5. Februar 2019, 16:35
Referenzen: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-3814
Applikationen: dovecot

Originalnachricht

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From: Marc Deslauriers <marc.deslauriers@canonical.com>
Reply-To: Ubuntu Security <security@ubuntu.com>
To: ubuntu-security-announce@lists.ubuntu.com
Message-ID: <3d2f8b66-ef62-6183-635a-31fa75cfb412@canonical.com>
Subject: [USN-3881-1] Dovecot vulnerability

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==========================================================================
Ubuntu Security Notice USN-3881-1
February 05, 2019

dovecot vulnerability
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 18.10
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS

Summary:

Dovecot could be made to expose sensitive information over the network.

Software Description:
- dovecot: IMAP and POP3 email server

Details:

It was discovered that Dovecot 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.

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 18.10:
dovecot-core 1:2.3.2.1-1ubuntu3.1

Ubuntu 18.04 LTS:
dovecot-core 1:2.2.33.2-1ubuntu4.2

Ubuntu 16.04 LTS:
dovecot-core 1:2.2.22-1ubuntu2.9

Ubuntu 14.04 LTS:
dovecot-core 1:2.2.9-1ubuntu2.5

In general, a standard system update will make all the necessary changes.

References:
https://usn.ubuntu.com/usn/usn-3881-1
CVE-2019-3814

Package Information:
https://launchpad.net/ubuntu/+source/dovecot/1:2.3.2.1-1ubuntu3.1
https://launchpad.net/ubuntu/+source/dovecot/1:2.2.33.2-1ubuntu4.2
https://launchpad.net/ubuntu/+source/dovecot/1:2.2.22-1ubuntu2.9
https://launchpad.net/ubuntu/+source/dovecot/1:2.2.9-1ubuntu2.5


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