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

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

Affected packages

net-mail/cyrus-imapd on all architectures
Affected versions < 3.0.13
Unaffected versions >= 3.0.13

Background

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

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

Release date
June 15, 2020

Latest revision
June 15, 2020: 1

Severity
normal

Exploitable
remote

Bugzilla entries