Cyrus IMAP up to 2.5.14/3.0.12/3.1.7 Sieve Script Command imap/lmtp_sieve.c autosieve_createfolder input validation

Summaryinfo

A vulnerability classified as critical has been found in Cyrus IMAP up to 2.5.14/3.0.12/3.1.7. This affects the function autosieve_createfolder of the file imap/lmtp_sieve.c of the component Sieve Script Command Handler. This manipulation causes input validation. This vulnerability is registered as CVE-2019-19783. Remote exploitation of the attack is possible. No exploit is available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in Cyrus IMAP up to 2.5.14/3.0.12/3.1.7. It has been declared as critical. Affected by this vulnerability is the function autosieve_createfolder of the file imap/lmtp_sieve.c of the component Sieve Script Command Handler. The manipulation with an unknown input leads to a input validation vulnerability. The CWE definition for the vulnerability is CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

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.

The weakness was published 12/16/2019. This vulnerability is known as CVE-2019-19783 since 12/13/2019. The attack can be launched remotely. Required for exploitation is a single authentication. Technical details are known, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 236563 (Alibaba Cloud Linux 3 : 0067: cyrus-imapd (ALINUX3-SA-2021:0067)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 2.5.15, 3.0.13 or 3.1.8 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (236563). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

• Cyrus

Name

• IMAP

Version

• 2.5.0
• 2.5.1
• 2.5.2
• 2.5.3
• 2.5.4
• 2.5.5
• 2.5.6
• 2.5.7
• 2.5.8
• 2.5.9
• 2.5.10
• 2.5.11
• 2.5.12
• 2.5.13
• 2.5.14
• 3.0.0
• 3.0.1
• 3.0.2
• 3.0.3
• 3.0.4
• 3.0.5
• 3.0.6
• 3.0.7
• 3.0.8
• 3.0.9
• 3.0.10
• 3.0.11
• 3.0.12
• 3.1.0
• 3.1.1
• 3.1.2
• 3.1.3
• 3.1.4
• 3.1.5
• 3.1.6
• 3.1.7

CPE 2.3info

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CPE 2.2info

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Entryinfo

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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