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Sicherheit: Denial of Service in dovecot
Aktuelle Meldungen Distributionen
Name: Denial of Service in dovecot
ID: FEDORA-2015-7156
Distribution: Fedora
Plattformen: Fedora 22
Datum: So, 3. Mai 2015, 20:28
Referenzen: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-3420

Originalnachricht

Name        : dovecot
Product : Fedora 22
Version : 2.2.16
Release : 2.fc22
URL : http://www.dovecot.org/
Summary : Secure imap and pop3 server
Description :
Dovecot is an IMAP server for Linux/UNIX-like systems, written with security
primarily in mind. It also contains a small POP3 server. It supports mail
in either of maildir or mbox formats.

The SQL drivers and authentication plug-ins are in their subpackages.

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Update Information:

fixes CVE-2015-3420: SSL/TLS handshake failures leading to a crash of the login
process
- dovecot updated to 2.2.16
- auth: Don't crash if master user login is attempted without
any configured master=yes passdbs
- Parsing UTF-8 text for mails could have caused broken results
sometimes if buffering was split in the middle of a UTF-8 character.
This affected at least searching messages.
- String sanitization for some logged output wasn't done properly:
UTF-8 text could have been truncated wrongly or the truncation may
not have happened at all.
- fts-lucene: Lookups from virtual mailbox consisting of over 32
physical mailboxes could have caused crashes.
- dovecot updated to 2.2.16
- auth: Don't crash if master user login is attempted without
any configured master=yes passdbs
- Parsing UTF-8 text for mails could have caused broken results
sometimes if buffering was split in the middle of a UTF-8 character.
This affected at least searching messages.
- String sanitization for some logged output wasn't done properly:
UTF-8 text could have been truncated wrongly or the truncation may
not have happened at all.
- fts-lucene: Lookups from virtual mailbox consisting of over 32
physical mailboxes could have caused crashes.
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-
References:

[ 1 ] Bug #1216057 - CVE-2015-3420 dovecot: SSL/TLS handshake failures
leading to a crash of the login process.
https://bugzilla.redhat.com/show_bug.cgi?id=1216057
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This update can be installed with the "yum" update program. Use
su -c 'yum update dovecot' at the command line.
For more information, refer to "Managing Software with yum",
available at http://docs.fedoraproject.org/yum/.

All packages are signed with the Fedora Project GPG key. More details on the
GPG keys used by the Fedora Project can be found at
https://fedoraproject.org/keys
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