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AUSCERT External Security Bulletin Redistribution
ESB-2018.0328
Dovecot vulnerabilities
2 February 2018
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AusCERT Security Bulletin Summary
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Product: Dovecot
Publisher: Ubuntu
Operating System: UNIX variants (UNIX, Linux, OSX)
Ubuntu
Impact/Access: Denial of Service -- Remote/Unauthenticated
Access Confidential Data -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2017-15132 CVE-2013-6171
Reference: ESB-2013.1622
Original Bulletin:
http://www.ubuntu.com/usn/usn-3556-2
Comment: This advisory references vulnerabilities in products which run on
platforms other than Ubuntu. It is recommended that administrators
running Dovecot check for an updated version of the software for
their operating system.
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Ubuntu Security Notice USN-3556-2
1st February, 2018
dovecot vulnerabilities
A security issue affects these releases of Ubuntu and its derivatives:
Ubuntu 12.04 LTS
Summary
Several security issues were fixed in Dovecot.
Software description
dovecot - IMAP and POP3 email server
Details
USN-3556-1 fixed vulnerabilities in Dovecot. This update
provides the corresponding update for Ubuntu 12.04 ESM.
It was discovered that Dovecot incorrectly handled certain authentications.
An attacker could possibly use this to bypass authentication and access
sensitive information. (CVE-2013-6171)
Original advisory details:
It was discovered that Dovecot incorrectly handled certain authentications.
An attacker could possibly use this to cause a denial of service.
(CVE-2017-15132)
Update instructions
The problem can be corrected by updating your system to the following package
version:
Ubuntu 12.04 LTS:
dovecot-core 1:2.0.19-0ubuntu2.4
To update your system, please follow these instructions:
https://wiki.ubuntu.com/Security/Upgrades.
In general, a standard system update will make all the necessary changes.
References
CVE-2013-6171, CVE-2017-15132
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