USN-4456-2: Dovecot vulnerabilities
Publication date
17 August 2020
Overview
Several security issues were fixed in Dovecot.
Releases
Packages
- dovecot - IMAP and POP3 email server
Details
USN-4456-1 fixed several vulnerabilities in Dovecot. This update provides
the corresponding update for Ubuntu 14.04 ESM.
Original advisory details:
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. (CVE-2020-12100)
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. (CVE-2020-12673)
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. (CVE-2020-12674)
USN-4456-1 fixed several vulnerabilities in Dovecot. This update provides
the corresponding update for Ubuntu 14.04 ESM.
Original advisory details:
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. (CVE-2020-12100)
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. (CVE-2020-12673)
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. (CVE-2020-12674)
Update instructions
In general, a standard system update will make all the necessary changes.
Learn more about how to get the fixes.The problem can be corrected by updating your system to the following package versions:
Ubuntu Release | Package Version | ||
---|---|---|---|
14.04 trusty | dovecot-core – 1:2.2.9-1ubuntu2.6+esm3 |
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