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Ubuntu Security Notice USN-4361-1

Ubuntu Security Notice USN-4361-1
Posted May 18, 2020
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4361-1 - Philippe Antoine discovered that Dovecot incorrectly handled certain data. An attacker could possibly use this issue to cause a denial of service. Philippe Antoine discovered that Dovecot incorrectly handled certain data. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code.

tags | advisory, denial of service, arbitrary
systems | linux, ubuntu
advisories | CVE-2020-10957, CVE-2020-10958
SHA-256 | 6ee8911fff03fb389c0482431869fdad5c89631e6f7a743f0768e361e278a6ba

Ubuntu Security Notice USN-4361-1

Change Mirror Download
==========================================================================
Ubuntu Security Notice USN-4361-1
May 18, 2020

dovecot vulnerabilities
==========================================================================

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

- Ubuntu 20.04 LTS
- Ubuntu 19.10

Summary:

Several security issues were fixed in Dovecot.

Software Description:
- dovecot: IMAP and POP3 email server

Details:

Philippe Antoine discovered that Dovecot incorrectly handled certain data.
An attacker could possibly use this issue to cause a denial of service.
(CVE-2020-10957, CVE-2020-10967)

Philippe Antoine discovered that Dovecot incorrectly handled certain data.
An attacker could possibly use this issue to cause a denial of service or execute
arbitrary code. (CVE-2020-10958)

Update instructions:

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

Ubuntu 20.04 LTS:
dovecot-core 1:2.3.7.2-1ubuntu3.1

Ubuntu 19.10:
dovecot-core 1:2.3.4.1-5ubuntu3.1

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

References:
https://usn.ubuntu.com/4361-1
CVE-2020-10957, CVE-2020-10958, CVE-2020-10967

Package Information:
https://launchpad.net/ubuntu/+source/dovecot/1:2.3.7.2-1ubuntu3.1
https://launchpad.net/ubuntu/+source/dovecot/1:2.3.4.1-5ubuntu3.1
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