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Test ID:1.3.6.1.4.1.25623.1.0.117153
Category:Denial of Service
Title:Dovecot 2.3.11 - 2.3.11.3 DoS Vulnerability
Summary:Dovecot is prone to a denial of service (DoS) vulnerability.
Description:Summary:
Dovecot is prone to a denial of service (DoS) vulnerability.

Vulnerability Insight:
Mail delivery / parsing crashed when the 10 000th MIME part was
message/rfc822 (or if parent was multipart/digest). This happened due to earlier MIME parsing
changes for CVE-2020-12100.

Vulnerability Impact:
Malicious sender can crash dovecot repeatedly by sending / uploading
message with more than 10 000 MIME parts.

Affected Software/OS:
Dovecot versions 2.3.11 - 2.3.11.3.

Solution:
Update to version 2.3.13 or later.

CVSS Score:
5.0

CVSS Vector:
AV:N/AC:L/Au:N/C:N/I:N/A:P

Cross-Ref: Common Vulnerability Exposure (CVE) ID: CVE-2020-25275
Debian Security Information: DSA-4825 (Google Search)
https://www.debian.org/security/2021/dsa-4825
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GXDKFLOCUP7I4ELGQ2F4P5TGC6NXMYV7/
http://seclists.org/fulldisclosure/2021/Jan/18
https://security.gentoo.org/glsa/202101-01
http://packetstormsecurity.com/files/160841/Dovecot-2.3.11.3-Denial-Of-Service.html
https://dovecot.org/security
CopyrightCopyright (C) 2021 Greenbone AG

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