PT-2020-5857 · Dovecot+7 · Dovecot+7

Innokentii Sennovskiy · Published 2020-09-11 · Updated 2022-09-02 · CVE-2020-25275

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

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

Name of the Vulnerable Software and Affected Versions: Dovecot versions prior to 2.3.13

Description: The issue is related to insufficient input validation in the lda, lmtp, and imap components of the Dovecot mail server. This allows a remote attacker to cause a denial of service by crafting a specific email message with certain choices for ten thousand MIME parts, leading to an application crash.

Recommendations: For versions prior to 2.3.13, update to version 2.3.13 or later to resolve the issue. As a temporary workaround, consider restricting the use of the lda, lmtp, and imap components until a patch is applied. Avoid processing crafted email messages with excessive MIME parts in the affected components.

Fix

RCE

Weakness Enumeration

CWE-20

Related Identifiers

ALSA-2021:1887

ALT-PU-2021-1027

ALT-PU-2021-1055

ALT-PU-2021-1205

BDU:2021-01901

CESA-2021_1887

CVE-2020-25275

DLA-2517-1

DSA-4825-1

MGASA-2021-0008

OESA-2021-1042

OPENSUSE-SU-2021:0026-1

OPENSUSE-SU-2021:0072-1

OPENSUSE-SU-2021_0026-1

OPENSUSE-SU-2021_0072-1

RHSA-2021:1887

RHSA-2021_1887

SUSE-SU-2021:0027-1

SUSE-SU-2021:0028-1

SUSE-SU-2021:0029-1

USN-4674-1

USN-4674-2

Affected Products

Alt Linux

Almalinux

Centos

Dovecot

Linuxmint

Red Hat

Suse

Ubuntu

References · 65

• https://bdu.fstec.ru/vul/2021-01901 · Security Note
• https://dovecot.org/pipermail/dovecot-news/2021-January/000451.html · Vendor Advisory
• https://dovecot.org/security · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2021:0027-1 · Vendor Advisory
• https://linux.oracle.com/errata/ELSA-2021-1887.html · Vendor Advisory
• https://osv.dev/vulnerability/MGASA-2021-0008 · Vendor Advisory
• https://ubuntu.com/security/CVE-2020-25275 · Vendor Advisory
• https://osv.dev/vulnerability/ALPINE-CVE-2020-25275 · Vendor Advisory
• https://advisories.mageia.org/MGASA-2021-0008.html · Security Note
• https://ubuntu.com/security/notices/USN-4674-1 · Vendor Advisory
• https://osv.dev/vulnerability/USN-4674-1 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2020-25275 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-25275 · Security Note
• https://ubuntu.com/security/CVE-2020-24386 · Vendor Advisory
• https://osv.dev/vulnerability/DSA-4825-1 · Vendor Advisory