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Ubuntu Security Notice USN-4110-2

Ubuntu Security Notice USN-4110-2
Posted Aug 28, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4110-2 - USN-4110-1 fixed a vulnerability in Dovecot. This update provides the corresponding update for Ubuntu 12.04 ESM and Ubuntu 14.04 ESM. Nick Roessler and Rafi Rubin discovered that Dovecot incorrectly handled certain data. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code. Various other issues were also addressed.

tags | advisory, denial of service, arbitrary
systems | linux, ubuntu
advisories | CVE-2019-11500
SHA-256 | 304d734f8346c73e85ea728a6b76429713959e68248569d54ebbdad82c84f68c

Ubuntu Security Notice USN-4110-2

Change Mirror Download
=========================================================================
Ubuntu Security Notice USN-4110-2
August 28, 2019

dovecot vulnerability
=========================================================================
A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 14.04 ESM
- Ubuntu 12.04 ESM

Summary:

Dovecot could be made to crash or execute arbitrary code if it received
a specially crafted data.

Software Description:
- dovecot: IMAP and POP3 email server

Details:

USN-4110-1 fixed a vulnerability in Dovecot. This update provides
the corresponding update for Ubuntu 12.04 ESM and Ubuntu 14.04 ESM.

Original advisory details:

Nick Roessler and Rafi Rubin discovered that Dovecot incorrectly
handled certain data. An attacker could possibly use this issue
to cause a denial of service or execute arbitrary code.

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 14.04 ESM:
dovecot-core 1:2.2.9-1ubuntu2.6+esm1

Ubuntu 12.04 ESM:
dovecot-core 1:2.0.19-0ubuntu2.7

In general, a standard system update will make all the necessary changes.

References:
https://usn.ubuntu.com/4110-2
https://usn.ubuntu.com/4110-1
CVE-2019-11500
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