CVE-2020-28200 - Vulnerability Details - OpenCVE

The Sieve engine in Dovecot before 2.3.15 allows Uncontrolled Resource Consumption, as demonstrated by a situation with a complex regular expression for the regex extension.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact Low

User Interaction None

No CVSS v3.0

Access Vector Network

Access Complexity Low

Authentication Single

Confidentiality Impact None

Integrity Impact None

Availability Impact Partial

This CVE is not in the KEV list.

The EPSS score is 0.01023.

Key SSVC decision points have not yet been added.

Vendors	Products
Dovecot	Dovecot
Fedoraproject	Fedora

Configuration 1 [-]

cpe:2.3:a:dovecot:dovecot:*:*:*:*:*:*:*:*

Configuration 2 [-]

OR	cpe:2.3:o:fedoraproject:fedora:33:::::::*
	cpe:2.3:o:fedoraproject:fedora:34:::::::*

No data.

No data.

Advisories

Source	ID	Title
EUVD	EUVD-2020-20684	The Sieve engine in Dovecot before 2.3.15 allows Uncontrolled Resource Consumption, as demonstrated by a situation with a complex regular expression for the regex extension.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References

Link	Providers
https://dovecot.org/security
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JB2VTJ3G2ILYWH5Y2FTY2PUHT2MD6VMI/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TK424DWFO2TKJYXZ2H3XL633TYJL4GQN/
https://nvd.nist.gov/vuln/detail/CVE-2020-28200
https://www.cve.org/CVERecord?id=CVE-2020-28200
https://www.openwall.com/lists/oss-security/2021/06/28/3

History

Sun, 13 Jul 2025 13:45:00 +0000

Type	Values Removed	Values Added
Metrics	epss `{'score': 0.00734}`	epss `{'score': 0.01023}`

MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2021-06-28T12:08:46

Updated: 2024-08-04T16:33:58.153Z

Reserved: 2020-11-04T00:00:00

Link: CVE-2020-28200

Vulnrichment

No data.

NVD

Status : Modified

Published: 2021-06-28T13:15:12.357

Modified: 2024-11-21T05:22:28.117

Link: CVE-2020-28200

Redhat

Severity : Moderate

Publid Date: 2021-06-21T00:00:00Z

Links: CVE-2020-28200 - Bugzilla

OpenCVE Enrichment

No data.

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