CVE-2019-19783 Information

Description

An issue was discovered in Cyrus IMAP before 2.5.15 3.0.x before 3.0.13 and 3.1.x through 3.1.8. If sieve script uploading is allowed (3.x) or certain non-default sieve options are enabled (2.x) a user with a mail account on the service can use a sieve script containing a fileinto directive to create any mailbox with administrator privileges because of folder mishandling in autosieve_createfolder() in imap/lmtp_sieve.c.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

Reference

https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/2DIV4HQ6LG5GPRO4B5Z2NHCZUPBUVVVF/ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/6IGOO5UGEBBDPN7B2YXLK7I7L3Y35EBA/ https://seclists.org/bugtraq/2019/Dec/38 https://security.gentoo.org/glsa/202006-23 https://usn.ubuntu.com/4566-1/ https://www.cyrusimap.org/imap/download/release-notes/2.5/x/2.5.15.html https://www.cyrusimap.org/imap/download/release-notes/3.0/x/3.0.13.html https://www.debian.org/security/2019/dsa-4590

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

HIGH

Base Score

NONE

Base Severity

6.5