Packages
- postfix - High-performance mail transport agent
Details
USN-8253-1 fixed a vulnerability in Postfix. This update provides the
corresponding fix for Postfix on Ubuntu 14.04 LTS, Ubuntu 16.04 LTS,
Ubuntu 18.04 LTS, and Ubuntu 20.04 LTS.
Original advisory details:
Kamil Frankowicz discovered that Postfix incorrectly handled certain
enhanced status codes. A remote attacker could possibly use this issue to
cause Postfix to crash, resulting in a denial of service.
USN-8253-1 fixed a vulnerability in Postfix. This update provides the
corresponding fix for Postfix on Ubuntu 14.04 LTS, Ubuntu 16.04 LTS,
Ubuntu 18.04 LTS, and Ubuntu 20.04 LTS.
Original advisory details:
Kamil Frankowicz discovered that Postfix incorrectly handled certain
enhanced status codes. A remote attacker could possibly use this issue to
cause Postfix to crash, resulting in a denial of service.
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 | ||
|---|---|---|---|
| 20.04 LTS focal | postfix – 3.4.13-0ubuntu1.4+esm1 | ||
| 18.04 LTS bionic | postfix – 3.3.0-1ubuntu0.4+esm4 | ||
| 16.04 LTS xenial | postfix – 3.1.0-3ubuntu0.4+esm4 | ||
| 14.04 LTS trusty | postfix – 2.11.0-1ubuntu1.2+esm4 | ||
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