Vulnerability in Eclipse Mosquitto
CVE-2019-11779
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.027 (85.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 86th percentile — 85.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.027 · newest: 0.027 · change: 0.000
Affected products
- Eclipse Mosquitto
- The Eclipse Foundation Mosquitto — versions 1.5.0 to 1.6.5 inclusive
- Canonical Ubuntu Linux — versions 19.04
- Debian Linux — versions 8.0, 10.0
- Fedoraproject Fedora — versions 29, 30, 31
- openSUSE Backports Sle — versions 15.0
- openSUSE Leap — versions 15.1
Weakness classification (CWE)
References
- bugs.eclipse.org/bugs/show_bug.cgi (Vendor Advisory)
- usn.ubuntu.com/4137-1/ (vendor-advisory, Third Party Advisory)
- lists.opensuse.org/opensuse-security-announce/2019-09/msg00077.html (vendor-advisory, Mailing List, Third Party Advisory)
- lists.opensuse.org/opensuse-security-announce/2019-10/msg00008.html (vendor-advisory, Mailing List, Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.debian.org/debian-lts-announce/2019/10/msg00035.html (mailing-list, Mailing List, Third Party Advisory)
- www.debian.org/security/2019/dsa-4570 (vendor-advisory, Third Party Advisory)
- seclists.org/bugtraq/2019/Nov/25 (mailing-list, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2019-11779?
- CVE-2019-11779 is a medium-severity vulnerability in Eclipse Mosquitto, classified under Improper Check for Unusual or Exceptional Conditions. CVSS score: 6.5/10. Published 2019-09-19.
- How severe is CVE-2019-11779?
- Medium severity. CVSS v3 base score is 6.5 out of 10.