- -------------------------------------------------------------------------
Debian Security Advisory DSA-4570-1                   [email protected]
https://www.debian.org/security/                     Salvatore Bonaccorso
November 17, 2019                     https://www.debian.org/security/faq
- -------------------------------------------------------------------------

Package        : mosquitto
CVE ID         : CVE-2019-11779
Debian Bug     : 940654

A vulnerability was discovered in mosquitto, a MQTT version 3.1/3.1.1
compatible message broker, allowing a malicious MQTT client to cause a
denial of service (stack overflow and daemon crash), by sending a
specially crafted SUBSCRIBE packet containing a topic with a extremely
deep hierarchy.

For the stable distribution (buster), this problem has been fixed in
version 1.5.7-1+deb10u1.

We recommend that you upgrade your mosquitto packages.

For the detailed security status of mosquitto please refer to its
security tracker page at:

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/

Mailing list: [email protected]lists.debian.org