CVE-2019-11779 Information

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:H

Reference

http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00077.html http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00008.html https://bugs.eclipse.org/bugs/show_bug.cgi?id=551160 https://lists.debian.org/debian-lts-announce/2019/10/msg00035.html https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/D4WMHIM64Q35NGTR6R3ILZUL4MA4ANB5/ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/HFWQBNFTAVHPUYNGYO2TCPF5PCSWC2Z7/ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/JWNVTFA2CKXERXRYPYE2YFTZP4GNBGYY/ https://seclists.org/bugtraq/2019/Nov/25 https://usn.ubuntu.com/4137-1/ https://www.debian.org/security/2019/dsa-4570

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

6.5