PT-2019-5496 · Eclipse+2 · Eclipse Mosquitto+2

Charles Taylor · Published 2019-01-14 · Updated 2019-10-26 · CVE-2018-12551

Positive Technologies (AI Summary)

CVSS v2.0

9.3

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Eclipse Mosquitto versions 1.0 through 1.5.5

Description The issue is related to the authentication procedure in Eclipse Mosquitto. When configured to use a password file for authentication, any malformed data in the file is treated as valid, potentially allowing clients to bypass authentication. Specifically, a blank line in the password file can be treated as a valid empty username, enabling unauthorized access to the broker. This issue does not affect other security measures, and users who have only used the mosquitto passwd utility to manage their password files are not affected.

Recommendations For Eclipse Mosquitto versions 1.0 through 1.5.5, ensure that password files are properly formatted and do not contain malformed data to prevent unauthorized access. As a temporary workaround, consider manually reviewing and correcting the password file to prevent exploitation.

Exploit

Fix

Improper Authentication

Weakness Enumeration

CWE-703

CWE-287

Related Identifiers

ALT-PU-2019-1213

BDU:2020-03294

CVE-2018-12551

DLA-1972-1

DSA-4388-1

DSA-4388-2

OPENSUSE-SU-2019:0233-1

OPENSUSE-SU-2019:0237-1

OPENSUSE-SU-2019_0233-1

OPENSUSE-SU-2024:11057-1

Affected Products

Alt Linux

Eclipse Mosquitto

Suse

References · 25

• 🔥 https://bugs.eclipse.org/bugs/show_bug.cgi?id=543401 · Exploit
• https://osv.dev/vulnerability/ALPINE-CVE-2018-12551 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2018-12551 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2018-12551 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2018-12551 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2018-12551 · Security Note
• https://cve.org/CVERecord?id=CVE-2018-12551 · Security Note
• https://osv.dev/vulnerability/DSA-4388-1 · Vendor Advisory
• https://osv.dev/vulnerability/DLA-1972-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-12551 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2019:0237-1 · Vendor Advisory
• https://bdu.fstec.ru/vul/2020-03294 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2018-12551 · Vendor Advisory
• https://osv.dev/vulnerability/DSA-4388-2 · Vendor Advisory
• https://suse.com/security/cve/CVE-2018-12550 · Note