CVE-2019-11779

NameCVE-2019-11779
DescriptionIn 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.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
NVD severitymedium
Debian Bugs940654

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
mosquitto (PTS)jessie1.3.4-2+deb8u1vulnerable
jessie (security)1.3.4-2+deb8u3vulnerable
stretch (security), stretch1.4.10-3+deb9u4vulnerable
buster1.5.7-1vulnerable
bullseye, sid1.6.7-1fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
mosquittosource(unstable)1.6.6-1940654

Notes

https://bugs.eclipse.org/bugs/show_bug.cgi?id=551160
https://github.com/eclipse/mosquitto/issues/1412
https://github.com/eclipse/mosquitto/commit/106675093177335b18521bc0e5ad1d95343ad652 (1.6.6)
https://github.com/eclipse/mosquitto/commit/84681d9728ceb7f6ea2b6751b4d87200d8a62f14 (1.5.9)

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