Important: dovecot

Issue Overview:

In Dovecot before 2.2.36.4 and 2.3.x before 2.3.7.2 (and Pigeonhole before 0.5.7.2), protocol processing can fail for quoted strings. This occurs because ‘\\0’ characters are mishandled, and can lead to out-of-bounds writes and remote code execution.(CVE-2019-11500)

Affected Packages:

dovecot

Note:

This advisory is applicable to Amazon Linux 2 (AL2) Core repository. Visit this FAQ section for the difference between AL2 Core and AL2 Extras advisories.

Issue Correction:
Run yum update dovecot to update your system.

New Packages:

aarch64:  
    dovecot-2.2.36-3.amzn2.1.aarch64  
    dovecot-pigeonhole-2.2.36-3.amzn2.1.aarch64  
    dovecot-pgsql-2.2.36-3.amzn2.1.aarch64  
    dovecot-mysql-2.2.36-3.amzn2.1.aarch64  
    dovecot-devel-2.2.36-3.amzn2.1.aarch64  
    dovecot-debuginfo-2.2.36-3.amzn2.1.aarch64  
  
i686:  
    dovecot-2.2.36-3.amzn2.1.i686  
    dovecot-pigeonhole-2.2.36-3.amzn2.1.i686  
    dovecot-pgsql-2.2.36-3.amzn2.1.i686  
    dovecot-mysql-2.2.36-3.amzn2.1.i686  
    dovecot-devel-2.2.36-3.amzn2.1.i686  
    dovecot-debuginfo-2.2.36-3.amzn2.1.i686  
  
src:  
    dovecot-2.2.36-3.amzn2.1.src  
  
x86_64:  
    dovecot-2.2.36-3.amzn2.1.x86_64  
    dovecot-pigeonhole-2.2.36-3.amzn2.1.x86_64  
    dovecot-pgsql-2.2.36-3.amzn2.1.x86_64  
    dovecot-mysql-2.2.36-3.amzn2.1.x86_64  
    dovecot-devel-2.2.36-3.amzn2.1.x86_64  
    dovecot-debuginfo-2.2.36-3.amzn2.1.x86_64  

Additional References

Red Hat: CVE-2019-11500

Mitre: CVE-2019-11500