VulnerabilityModified
CVE-2017-7653
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.
MEDIUM 5.3EPSS 1.47%
Does this matter?
Lower severity and a low EPSS score (1.47%). Track it; it rarely justifies an emergency change on its own.
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 3.0
- 5.3 MEDIUMCVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 1.47% probability · 72th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-20
- Affected
- eclipse/mosquitto · debian/debian linux
- Source
- emo@eclipse.org
References
- http://docs.oasis-open.org/mqtt/disallowed-chars/v1.0/disallowed-chars-v1.0.pdfThird Party Advisory
- https://bugs.eclipse.org/bugs/show_bug.cgi?id=532113Issue Tracking, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2018/09/msg00036.htmlMailing List, Third Party Advisory
- https://usn.ubuntu.com/4023-1/
- https://www.debian.org/security/2018/dsa-4325Third Party Advisory
- http://docs.oasis-open.org/mqtt/disallowed-chars/v1.0/disallowed-chars-v1.0.pdfThird Party Advisory
- https://bugs.eclipse.org/bugs/show_bug.cgi?id=532113Issue Tracking, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2018/09/msg00036.htmlMailing List, Third Party Advisory
- https://usn.ubuntu.com/4023-1/
- https://www.debian.org/security/2018/dsa-4325Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.