Medium severity · published Jun 5, 2018
CVE-2017-7653
The Eclipse Mosquitto broker up to version 1.4.15 does not reject strings that are not valid UTF-8
5.3
CVSS
1.4%
EPSS
No
On KEV
Description
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 vector
CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
High
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.4% · higher than 73% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DL
Debian Linux · Debian
8.0; 9.0 · source: NVD
MO
Mosquitto · Eclipse
through 1.4.15 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2017-7653
CVE.org
https://www.cve.org/CVERecord?id=CVE-2017-7653
Third Party Advisory
http://docs.oasis-open.org/mqtt/disallowed-chars/v1.0/disallowed-chars-v1.0.pdf
Issue Tracking
https://bugs.eclipse.org/bugs/show_bug.cgi?id=532113
Mailing List
https://lists.debian.org/debian-lts-announce/2018/09/msg00036.html
usn.ubuntu.com
https://usn.ubuntu.com/4023-1/
Third Party Advisory
https://www.debian.org/security/2018/dsa-4325
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