SB2021052212 - Red Hat Enterprise Linux 8 update for dovecot 

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Main Vulnerability Database SB2021052212

SB2021052212 - Red Hat Enterprise Linux 8 update for dovecot

Published: May 22, 2021

Security Bulletin ID SB2021052212
Severity
Medium
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Information disclosure

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 secuirty vulnerabilities.


1) Information disclosure (CVE-ID: CVE-2020-24386)

The vulnerability allows a remote user to gain access to sensitive information.

The vulnerability exists due to an error, related to IMAP hibernation. A remote user can run a specially crafted command to discover system directory structure and access emails of other users.


2) Input validation error (CVE-ID: CVE-2020-25275)

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

The vulnerability exists due to insufficient validation of user-supplied input when processing messages with more than 10 000 MIME parts. A remote attacker can send a specially crafted message to the application and perform a denial of service (DoS) attack.

Note, this vulnerability was introduced by the fix for #VU45671.


Remediation

Install update from vendor's website.

References