CVE-2017-7652

NameCVE-2017-7652
DescriptionIn Eclipse Mosquitto 1.4.14, if a Mosquitto instance is set running with a configuration file, then sending a HUP signal to server triggers the configuration to be reloaded from disk. If there are lots of clients connected so that there are no more file descriptors/sockets available (default limit typically 1024 file descriptors on Linux), then opening the configuration file will fail.
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)
ReferencesDLA-1334-1, DLA-1409-1
NVD severitymedium (attack range: remote)

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+deb8u2fixed
stretch1.4.10-3+deb9u1vulnerable
buster, sid1.4.15-2fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
mosquittosource(unstable)1.4.15-1medium
mosquittosourcejessie1.3.4-2+deb8u2mediumDLA-1409-1
mosquittosourcewheezy0.15-2+deb7u3mediumDLA-1334-1

Notes

Patches: https://mosquitto.org/files/cve/2017-7652
http://mosquitto.org/blog/2018/02/security-advisory-cve-2017-7651-cve-2017-7652/

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