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Ubuntu: 4361-1 Critical: Dovecot Denial Of Service And Code Execution

ubuntu
Calendar Grey May 18, 2020
Dist Ubuntu Esm H88
The latest Ubuntu Security Notice USN-4362-1 concerns vulnerabilities within the OpenSSH package impacting Ubuntu 21.04 and 20.10, providing crucial update information.
Several security issues were fixed in Dovecot.

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)

Topics%20covered

Topics Covered

security advisory denial of service arbitrary code execution Ubuntu dovecot

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://ubuntu.com/security/notices/USN-4361-1

CVE-2020-10957, CVE-2020-10958, CVE-2020-10967

Severity
critical
Lowest
Low
Medium
High
Critical

May 18, 2020

Topics%20covered

Topics Covered

security advisory denial of service arbitrary code execution Ubuntu dovecot

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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