Vulnerability CVE-2017-7653

Vulnerability Name:

CVE-2017-7653 (CCN-144927)

Assigned:

2017-04-11

Published:

2018-06-05

Updated:

2019-06-20

Summary:

The Eclipse Mosquitto broker up to version 1.4.15 does not reject strings that are not valid UTF-8. A malicious client could cause other clients that do reject invalid UTF-8 strings to disconnect themselves from the broker by sending a topic string which is not valid UTF-8, and so cause a denial of service for the clients.

CVSS v3 Severity:

5.3 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H)
4.7 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:U/RC:R)

Exploitability Metrics:	Attack Vector (AV): Network Attack Complexity (AC): High Privileges Required (PR): Low User Interaction (UI): None
Scope:	Scope (S): Unchanged
Impact Metrics:	Confidentiality (C): None Integrity (I): None Availibility (A): High

5.3 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L)
4.7 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:U/RC:R)

Exploitability Metrics:	Attack Vector (AV): Network Attack Complexity (AC): Low Privileges Required (PR): None User Interaction (UI): None
Scope:	Scope (S): Unchanged
Impact Metrics:	Confidentiality (C): None Integrity (I): None Availibility (A): Low

CVSS v2 Severity:

3.5 Low (CVSS v2 Vector: AV:N/AC:M/Au:S/C:N/I:N/A:P)

Exploitability Metrics:	Access Vector (AV): Network Access Complexity (AC): Medium Authentication (Au): Single_Instance
Impact Metrics:	Confidentiality (C): None Integrity (I): None Availibility (A): Partial

5.0 Medium (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P)

Exploitability Metrics:	Access Vector (AV): Network Access Complexity (AC): Low Athentication (Au): None
Impact Metrics:	Confidentiality (C): None Integrity (I): None Availibility (A): Partial

Vulnerability Type:

CWE-20

Vulnerability Consequences:

Denial of Service

References:

Source: MITRE
Type: CNA
CVE-2017-7653

Source: MISC
Type: Third Party Advisory
http://docs.oasis-open.org/mqtt/disallowed-chars/v1.0/disallowed-chars-v1.0.pdf

Source: CCN
Type: Bugzilla Bug 532113
(CVE-2017-7653) - CVE-2017-7653: Eclipse Mosquitto does not validate topic strings

Source: CONFIRM
Type: Issue Tracking, Third Party Advisory
https://bugs.eclipse.org/bugs/show_bug.cgi?id=532113

Source: XF
Type: UNKNOWN
eclipse-msosquitto-cve20177653-dos(144927)

Source: MLIST
Type: Mailing List, Third Party Advisory
[debian-lts-announce] 20180928 [SECURITY] [DLA 1525-1] mosquitto security update

Source: CCN
Type: Eclipse Mosquitto Web site
Mosquitto

Source: UBUNTU
Type: UNKNOWN
USN-4023-1

Source: DEBIAN
Type: Third Party Advisory
DSA-4325

Vulnerable Configuration:

Configuration 1:

cpe:/a:eclipse:mosquitto:*:*:*:*:*:*:*:* (Version <= 1.4.15)

Configuration 2:

cpe:/o:debian:debian_linux:8.0:*:*:*:*:*:*:*

OR cpe:/o:debian:debian_linux:9.0:*:*:*:*:*:*:*

Configuration CCN 1:

cpe:/a:eclipse:mosquitto:1.4.15:*:*:*:*:*:*:*

Denotes that component is vulnerable

Oval Definitions

Definition ID	Class	Title	Last Modified
oval:com.ubuntu.xenial:def:201776530000000	V	CVE-2017-7653 on Ubuntu 16.04 LTS (xenial) - medium.	2018-06-05
oval:com.ubuntu.artful:def:20177653000	V	CVE-2017-7653 on Ubuntu 17.10 (artful) - medium.	2018-06-05
oval:com.ubuntu.xenial:def:20177653000	V	CVE-2017-7653 on Ubuntu 16.04 LTS (xenial) - medium.	2018-06-05
oval:com.ubuntu.disco:def:201776530000000	V	CVE-2017-7653 on Ubuntu 19.04 (disco) - medium.	2018-06-05
oval:com.ubuntu.bionic:def:20177653000	V	CVE-2017-7653 on Ubuntu 18.04 LTS (bionic) - medium.	2018-06-05
oval:com.ubuntu.cosmic:def:201776530000000	V	CVE-2017-7653 on Ubuntu 18.10 (cosmic) - medium.	2018-06-05
oval:com.ubuntu.cosmic:def:20177653000	V	CVE-2017-7653 on Ubuntu 18.10 (cosmic) - medium.	2018-06-05
oval:com.ubuntu.bionic:def:201776530000000	V	CVE-2017-7653 on Ubuntu 18.04 LTS (bionic) - medium.	2018-06-05
oval:com.ubuntu.trusty:def:20177653000	V	CVE-2017-7653 on Ubuntu 14.04 LTS (trusty) - medium.	2018-06-05

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