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Ubuntu Security Notice USN-3587-2
April 02, 2018
dovecot vulnerabilities
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A security issue affects these releases of Ubuntu and its derivatives:
– Ubuntu 12.04 ESM
Summary:
Several security issues were fixed in Dovecot.
Software Description:
– dovecot: IMAP and POP3 email server
Details:
USN-3587-1 fixed a vulnerability in Dovecot. This update provides
the corresponding update for Ubuntu 12.04 ESM.
Original advisory details:
It was discovered that Dovecot incorrectly handled parsing certain
email addresses. A remote attacker could use this issue to cause
Dovecot to crash, resulting in a denial of service, or possibly obtain
sensitive information. (CVE-2017-14461)
It was discovered that Dovecot incorrectly handled TLS SNI config
lookups. A remote attacker could possibly use this issue to cause
Dovecot to crash, resulting in a denial of service. (CVE-2017-15130)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 12.04 ESM:
dovecot-core 1:2.0.19-0ubuntu2.5
In general, a standard system update will make all the necessary
changes.
References:
https://usn.ubuntu.com/usn/usn-3587-2
https://usn.ubuntu.com/usn/usn-3587-1
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