CVE-2016-7795

NameCVE-2016-7795
DescriptionThe manager_invoke_notify_message function in systemd 231 and earlier allows local users to cause a denial of service (assertion failure and PID 1 hang) via a zero-length message received over a notify socket.
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 (attack range: local)
Debian Bugs839171

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
systemd (PTS)jessie215-17+deb8u7fixed
jessie (security)215-17+deb8u8fixed
stretch232-25+deb9u6fixed
buster239-13fixed
sid239-15fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
systemdsource(unstable)231-9medium839171
systemdsourcejessie(not affected)
systemdsourcewheezy(not affected)

Notes

[jessie] - systemd <not-affected> (Introduced in 219)
[wheezy] - systemd <not-affected> (Introduced in 219)
https://github.com/systemd/systemd/issues/4234
https://github.com/systemd/systemd/commit/531ac2b2349da02acc9c382849758e07eb92b020
Originally fixed in 231-8 but caused a regression fixed in 231-9
https://www.agwa.name/blog/post/how_to_crash_systemd_in_one_tweet

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