PT-2018-3408 · Dovecot+3 · Dovecot+3

Pedro Sampaio · Published 2018-02-28 · Updated 2025-01-30 · CVE-2017-15130

Positive Technologies (AI Summary)

CVSS v2.0

7.1

High

Base vector

AV:N/AC:M/Au:N/C:N/I:N/A:C

Name of the Vulnerable Software and Affected Versions: dovecot versions prior to 2.2.34

Description: A denial of service flaw was found in the TLS SNI configuration lookups of the Dovecot mail server. An attacker able to generate random SNI server names could exploit this issue, leading to excessive memory usage and causing the process to restart. The vulnerability is related to an error in the TLS protocol implementation configuration.

Recommendations: For versions prior to 2.2.34, update to version 2.2.34 or later to resolve the issue. As a temporary workaround, consider restricting access to the TLS SNI configuration to minimize the risk of exploitation.

Fix

DoS

Resource Exhaustion

Weakness Enumeration

CWE-400

Related Identifiers

ALT-PU-2018-2038

BDU:2020-00780

CVE-2017-15130

DLA-1333-1

DSA-4130-1

MGASA-2018-0160

OPENSUSE-SU-2018_2642-1

OPENSUSE-SU-2024:10726-1

OPENSUSE-SU-2025:14715-1

SUSE-SU-2018:2632-1

SUSE-SU-2018:2632-2

SUSE-SU-2018_2632-1

SUSE-SU-2018_2632-2

USN-3587-1

USN-3587-2

Affected Products

Alt Linux

Dovecot

Suse

Ubuntu

References · 75

• https://ubuntu.com/security/CVE-2017-15130 · Vendor Advisory
• https://debian.org/security/2018/dsa-4130 · Vendor Advisory
• https://usn.ubuntu.com/3587-1 · Vendor Advisory
• https://osv.dev/vulnerability/USN-3587-1 · Vendor Advisory
• https://security-tracker.debian.org/tracker/DSA-4130-1 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2024:10726-1 · Vendor Advisory
• https://usn.ubuntu.com/3587-2 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2017-15130 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-3587-2 · Vendor Advisory
• https://osv.dev/vulnerability/ALPINE-CVE-2017-15130 · Vendor Advisory
• https://ubuntu.com/security/CVE-2017-14461 · Vendor Advisory
• https://dovecot.org/list/dovecot-news/2018-February/000370.html · Vendor Advisory
• https://bdu.fstec.ru/vul/2020-00780 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2017-15130 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-15132 · Security Note