CVE-2019-19783

MEDIUM
6.5
CVSS Score
Published: December 16, 2019 at 01:06 PM UTC
Updated: June 17, 2026 at 02:27 AM UTC
4 products affected across 4 vendorsDebian LinuxFedoraUbuntu Linux

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Severity
MEDIUM6.5
Exploit prediction
EPSS 2%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

2.5.0 ≤ v < 2.5.153.0.0 ≤ v < 3.0.133.1.0 ≤ v < 3.1.8
Affected range stops below 2.5.15, so it looks safe — our inference, not a vendor statement
Affected range stops below 3.0.13, so it looks safe — our inference, not a vendor statement
Affected range stops below 3.1.8, so it looks safe — our inference, not a vendor statement

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
HIGH
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-269

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