Critical severity · published May 1, 2017
CVE-2017-6519
avahi-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…
9.1
CVSS
3.2%
EPSS
No
On KEV
Description
avahi-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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)3.2% · higher than 88% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AV
Avahi · Avahi
through 0.6.32; 0.7 · source: NVD
UL
Ubuntu Linux · Canonical
12.04; 14.04; 16.04; 18.04; 18.10 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2017-6519
CVE.org
https://www.cve.org/CVERecord?id=CVE-2017-6519
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=1426712
Exploit
https://github.com/lathiat/avahi/issues/203
Third Party Advisory
https://github.com/lathiat/avahi/issues/203#issuecomment-449536790
lists.apache.org
https://lists.apache.org/thread.html/r1b103833cb5bc8466e24ff0ecc5e75b45a705334ab6a444e64e840a0%40%3Cissues.bookkeeper.apache.org%3E
Third Party Advisory
https://usn.ubuntu.com/3876-1/
Third Party Advisory
https://usn.ubuntu.com/3876-2/
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