CVE-2019-11779 — Improper Check for Unusual or Exceptional Conditions in Mosquitto
Severity
6.5MEDIUMNVD
EPSS
6.8%
top 8.66%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedSep 19
Latest updateMay 24
Description
In Eclipse Mosquitto 1.5.0 to 1.6.5 inclusive, if a malicious MQTT client sends a SUBSCRIBE packet containing a topic that consists of approximately 65400 or more '/' characters, i.e. the topic hierarchy separator, then a stack overflow will occur.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HExploitability: 2.8 | Impact: 3.6
Affected Packages5 packages
Also affects: Debian Linux 10.0, 8.0, Fedora 29, 30, 31, Ubuntu Linux 19.04