Executive Summary

Summary
Title Dovecot vulnerability
Informations
Name USN-3951-1 First vendor Publication 2019-04-23
Vendor Ubuntu Last vendor Modification 2019-04-23
Severity (Vendor) N/A Revision N/A

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score NA
Base Score NA Environmental Score NA
impact SubScore NA Temporal Score NA
Exploitabality Sub Score NA
 
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Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:N/C:N/I:N/A:P)
Cvss Base Score 5 Attack Range Network
Cvss Impact Score 2.9 Attack Complexity Low
Cvss Expoit Score 10 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

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

- Ubuntu 19.04 - Ubuntu 18.10

Summary:

Dovecot could be made to crash if it received specially crafted network traffic.

Software Description: - dovecot: IMAP and POP3 email server

Details:

It was discovered that the Dovecot JSON encoder incorrectly handled certain invalid UTF-8 characters. A remote attacker could possibly use this issue to cause Dovecot to repeatedly crash, resulting in a denial of service.

Update instructions:

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

Ubuntu 19.04:
dovecot-core 1:2.3.4.1-1ubuntu2.1

Ubuntu 18.10:
dovecot-core 1:2.3.2.1-1ubuntu3.3

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

References:
https://usn.ubuntu.com/usn/usn-3951-1
CVE-2019-10691

Package Information:
https://launchpad.net/ubuntu/+source/dovecot/1:2.3.4.1-1ubuntu2.1
https://launchpad.net/ubuntu/+source/dovecot/1:2.3.2.1-1ubuntu3.3

Original Source

Url : http://www.ubuntu.com/usn/USN-3951-1

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 140
Os 1

Alert History

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0
Date Informations
2020-03-19 13:20:10
  • First insertion