GLSA 202006-23: Cyrus IMAP Server: Access restriction bypass

http://security.gentoo.org/

Severity:	normal
Title:	Cyrus IMAP Server: Access restriction bypass
Date:	06/15/2020
Bugs:	#703630
ID:	202006-23

Synopsis

An error in Cyrus IMAP Server allows mailboxes to be created with administrative privileges.

Background

The Cyrus IMAP Server is an efficient, highly-scalable IMAP e-mail server.

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
net-mail/cyrus-imapd	< 3.0.13	>= 3.0.13	All supported architectures

Description

An issue was discovered in Cyrus IMAP Server where sieve script uploading is excessively trusted.

Impact

A user can use a sieve script to create any mailbox with administrator privileges.

Workaround

Disable sieve script uploading until the upgrade is complete.

Resolution

All Cyrus IMAP Server users should upgrade to the latest version:

      # emerge --sync
      # emerge --ask --oneshot --verbose ">=net-mail/cyrus-imapd-3.0.13"

References

CVE-2019-19783

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-202006-23.xml

Concerns?

Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.