Stack-based buffer overflow in Eclipse Mosquitto - CVE-2019-11779
Published: September 29, 2019
Vulnerability identifier: #VU21405
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2019-11779
CWE-ID: CWE-121
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Eclipse
Affected software:
Eclipse Mosquitto
Eclipse Mosquitto
Detailed vulnerability description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a boundary error when processing an overly long SUBSCRIBE packet containing a topic that consists of approximately 65400 or more '/' characters. A malicious MQTT client can send a specially crafted SUBSCRIBE packet, trigger stack overflow and perform denial of service attack.
How to mitigate CVE-2019-11779
Install updates from vendor's website.