CVE-2019-11779
First published: Wed Sep 18 2019(Updated: )
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.
Credit: emo@eclipse.org emo@eclipse.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| debian/mosquitto | <=1.6.4-1<=1.5.7-1 | 1.6.6-1 1.5.7-1+deb10u1 |
| Eclipse Mosquitto | >=1.5<1.5.9 | |
| Eclipse Mosquitto | >=1.6<1.6.6 | |
| Canonical Ubuntu Linux | =19.04 | |
| openSUSE Backports SLE | =15.0-sp1 | |
| openSUSE Leap | =15.1 | |
| Fedoraproject Fedora | =29 | |
| Fedoraproject Fedora | =30 | |
| Fedoraproject Fedora | =31 | |
| Debian Debian Linux | =8.0 | |
| Debian Debian Linux | =10.0 | |
| ubuntu/mosquitto | <1.5.7-1ubuntu0.1 | 1.5.7-1ubuntu0.1 |
| ubuntu/mosquitto | <1.6.6-1 | 1.6.6-1 |
| debian/mosquitto | 1.5.7-1+deb10u1 2.0.11-1+deb11u1 2.0.11-1.2+deb12u1 2.0.18-1 |
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Reference Links
- https://bugs.eclipse.org/bugs/show_bug.cgi?id=551160
- https://security-tracker.debian.org/tracker/CVE-2019-11779
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=940654
- https://usn.ubuntu.com/4137-1/
- http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00077.html
- http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00008.html
- 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://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/D4WMHIM64Q35NGTR6R3ILZUL4MA4ANB5/
- https://lists.debian.org/debian-lts-announce/2019/10/msg00035.html
- https://www.debian.org/security/2019/dsa-4570
- https://seclists.org/bugtraq/2019/Nov/25
- https://launchpad.net/bugs/cve/CVE-2019-11779
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/D4WMHIM64Q35NGTR6R3ILZUL4MA4ANB5/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HFWQBNFTAVHPUYNGYO2TCPF5PCSWC2Z7/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JWNVTFA2CKXERXRYPYE2YFTZP4GNBGYY/
- https://github.com/eclipse/mosquitto/issues/1412
- https://github.com/eclipse/mosquitto/commit/883af8af5379092097c6552a7a4a8c52409d2566
- https://github.com/eclipse/mosquitto/commit/106675093177335b18521bc0e5ad1d95343ad652
- https://github.com/eclipse/mosquitto/commit/84681d9728ceb7f6ea2b6751b4d87200d8a62f14
- https://mosquitto.org/blog/2019/09/version-1-6-6-released/
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-11779
- https://ubuntu.com/security/notices/USN-4137-1
- https://nvd.nist.gov/vuln/detail/CVE-2019-11779
- https://ubuntu.com/security/CVE-2019-11779
Frequently Asked Questions
What is CVE-2019-11779?
CVE-2019-11779 is a vulnerability in Eclipse Mosquitto 1.5.0 to 1.6.5 that can cause a stack overflow when a malicious MQTT client sends a SUBSCRIBE packet with a topic containing a large number of '/' characters.
How does CVE-2019-11779 affect Eclipse Mosquitto?
CVE-2019-11779 affects Eclipse Mosquitto versions 1.5.0 to 1.6.5, inclusive.
What is the severity level of CVE-2019-11779?
CVE-2019-11779 has a severity level of high with a score of 6.5.
How can I fix CVE-2019-11779?
To fix CVE-2019-11779, update your Eclipse Mosquitto installation to version 1.5.7-1+deb10u1 or higher, or version 1.6.6-1 or higher, depending on the package and source you are using.
Where can I find more information about CVE-2019-11779?
You can find more information about CVE-2019-11779 on the MITRE CVE database, Eclipse Bugzilla, and the Ubuntu Security Notices.
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