CVE-2017-6519

NameCVE-2017-6519
Descriptionavahi-daemon in Avahi through 0.6.32 and 0.7 inadvertently responds to IPv6 unicast queries with source addresses that are not on-link, which allows remote attackers to cause a denial of service (traffic amplification) and may cause information leakage by obtaining potentially sensitive information from the responding device via port-5353 UDP packets. NOTE: this may overlap CVE-2015-2809.
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: remote)
Debian Bugs917047

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
avahi (PTS)jessie0.6.31-5vulnerable
stretch0.6.32-2vulnerable
buster, sid0.7-4vulnerable

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
avahisource(unstable)(unfixed)unimportant917047

Notes

https://bugzilla.redhat.com/show_bug.cgi?id=1426712
https://github.com/lathiat/avahi/issues/203
https://github.com/lathiat/avahi/commit/e111def44a7df4624a4aa3f85fe98054bffb6b4f

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