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Test ID:1.3.6.1.4.1.25623.1.0.891525
Category:Debian Local Security Checks
Title:Debian LTS Advisory ([SECURITY] [DLA 1525-1] mosquitto security update)
Summary:CVE-2017-7653;;As invalid UTF-8 strings are not correctly checked, an attacker could;cause a denial of service to other clients by disconnecting;them from the broker with special crafted topics.;;CVE-2017-7654;;Due to a memory leak unauthenticated clients can send special crafted;CONNECT packets which could cause a denial of service in the broker.;;CVE-2017-9868;;Due to wrong file permissions local users could obtain topic;information from the mosquitto database.
Description:Summary:
CVE-2017-7653

As invalid UTF-8 strings are not correctly checked, an attacker could
cause a denial of service to other clients by disconnecting
them from the broker with special crafted topics.

CVE-2017-7654

Due to a memory leak unauthenticated clients can send special crafted
CONNECT packets which could cause a denial of service in the broker.

CVE-2017-9868

Due to wrong file permissions local users could obtain topic
information from the mosquitto database.

Affected Software/OS:
mosquitto on Debian Linux

Solution:
For Debian 8 'Jessie', these problems have been fixed in version
1.3.4-2+deb8u3.

We recommend that you upgrade your mosquitto packages.

CVSS Score:
5.0

CVSS Vector:
AV:N/AC:L/Au:N/C:N/I:N/A:P

Cross-Ref: Common Vulnerability Exposure (CVE) ID: CVE-2017-7653
Debian Security Information: DSA-4325 (Google Search)
https://www.debian.org/security/2018/dsa-4325
http://docs.oasis-open.org/mqtt/disallowed-chars/v1.0/disallowed-chars-v1.0.pdf
https://lists.debian.org/debian-lts-announce/2018/09/msg00036.html
Common Vulnerability Exposure (CVE) ID: CVE-2017-7654
Common Vulnerability Exposure (CVE) ID: CVE-2017-9868
CopyrightCopyright (c) 2018 Greenbone Networks GmbH http://greenbone.net

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