DescriptionArray index error in LightDM (aka Light Display Manager) 1.14.3, 1.16.x before 1.16.6 when the XDMCP server is enabled allows remote attackers to cause a denial of service (process crash) via an XDMCP request packet with no address.
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

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
lightdm (PTS)jessie1.10.3-3fixed
bullseye, sid1.26.0-7fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
lightdmsourcejessie(not affected)
lightdmsourcewheezy(not affected)


[jessie] - lightdm <not-affected> (Affects 1.14.x, 1.16.x and development 1.17.x)
[wheezy] - lightdm <not-affected> (Affects 1.14.x, 1.16.x and development 1.17.x) (1.14.x) (1.16.x)

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