SB2019050101 - Multiple vulnerabilities in Dovecot

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Main Vulnerability Database SB2019050101

SB2019050101 - Multiple vulnerabilities in Dovecot

Published: May 1, 2019 Updated: May 6, 2019

Security Bulletin ID SB2019050101
Severity
Medium
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Denial of service

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 secuirty vulnerabilities.


1) NULL pointer dereference (CVE-ID: CVE-2019-11494)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a NULL pointer dereference error within Submission-login when processing authentication. A remote attacker can unexpectedly abort the authentication process by disconnecting from the server during authentication and cause the software to crash.


2) Resource management error (CVE-ID: CVE-2019-11499)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to incorrect resource management error within the submission-login when processing incorrect authentication messages over TLS secure channel. A remote attacker can send an invalid authentication message and crash the service.


Remediation

Install update from vendor's website.

References