Eclipse Mosquitto 1.5.0/1.5.2/1.5.3 Topic input validation

CVSS Meta Temp Score
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CTI Interest Score
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7.2$0-$5k0.00

A vulnerability classified as critical was found in Eclipse Mosquitto 1.5.0/1.5.2/1.5.3. Affected by this vulnerability is some unknown functionality of the component Topic Handler. The manipulation with an unknown input leads to a input validation vulnerability. The CWE definition for the vulnerability is CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

In Eclipse Mosquitto versions 1.5 to 1.5.2 inclusive, if a message is published to Mosquitto that has a topic starting with $, but that is not $SYS, e.g. $test/test, then an assert is triggered that should otherwise not be reachable and Mosquitto will exit.

The bug was discovered 11/07/2018. The weakness was shared 11/15/2018 (Website). It is possible to read the advisory at bugs.eclipse.org. This vulnerability is known as CVE-2018-12543 since 06/18/2018. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. The technical details are unknown and an exploit is not publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 118314 (Fedora 27 : mosquitto (2018-a115b0b80e)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 277547 (Fedora Security Update for mosquitto (FEDORA-2018-9a6af7815a)).

Upgrading eliminates this vulnerability. A possible mitigation has been published before and not just after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (118314).

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CPE 2.3info

CPE 2.2info

CVSSv4info

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CVSSv3info

VulDB Meta Base Score: 7.4
VulDB Meta Temp Score: 7.2

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

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Nessus ID: 118314
Nessus Name: Fedora 27 : mosquitto (2018-a115b0b80e)
Nessus File: 🔍
Nessus Risk: 🔍
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Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

06/18/2018 🔍
10/22/2018 +126 days 🔍
10/23/2018 +1 days 🔍
11/07/2018 +15 days 🔍
11/15/2018 +8 days 🔍
11/15/2018 +0 days 🔍
11/16/2018 +1 days 🔍
06/06/2023 +1663 days 🔍

Sourcesinfo

Advisory: FEDORA-2018-a115b0b80e
Status: Not defined
Confirmation: 🔍

CVE: CVE-2018-12543 (🔍)

Entryinfo

Created: 11/16/2018 08:00 AM
Updated: 06/06/2023 04:04 PM
Changes: 11/16/2018 08:00 AM (69), 04/13/2020 02:59 PM (2), 06/06/2023 04:04 PM (4)
Complete: 🔍
Cache ID: 18:F1A:40

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