Executive Summary

Summary
Title Dovecot vulnerabilities
Informations
Name USN-4361-1 First vendor Publication 2020-05-18
Vendor Ubuntu Last vendor Modification 2020-05-18
Severity (Vendor) N/A Revision N/A

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Overall CVSS Score 7.5
Base Score 7.5 Environmental Score 7.5
impact SubScore 3.6 Temporal Score 7.5
Exploitabality Sub Score 3.9
 
Attack Vector Network Attack Complexity Low
Privileges Required None User Interaction None
Scope Unchanged Confidentiality Impact None
Integrity Impact None Availability Impact High
Calculate full CVSS 3.0 Vectors scores

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 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

Original Source

Url : http://www.ubuntu.com/usn/USN-4361-1

CWE : Common Weakness Enumeration

% Id Name
33 % CWE-476 NULL Pointer Dereference
33 % CWE-416 Use After Free
33 % CWE-20 Improper Input Validation

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 299

Alert History

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0
1
Date Informations
2020-05-23 13:03:46
  • Multiple Updates
2020-05-18 17:19:17
  • First insertion