Medium severity · published Jan 23, 2018
CVE-2017-15105
A flaw was found in the way unbound before 1.6.8 validated wildcard-synthesized NSEC records
5.3
CVSS
3.2%
EPSS
No
On KEV
Description
A flaw was found in the way unbound before 1.6.8 validated wildcard-synthesized NSEC records. An improperly validated wildcard NSEC record could be used to prove the non-existence (NXDOMAIN answer) of an existing wildcard record, or trick unbound into accepting a NODATA proof.
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
Low
Availability
None
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
DL
Debian Linux · Debian
7.0; 8.0 · source: NVD
UL
Ubuntu Linux · Canonical
14.04; 16.04; 17.10; 18.04 · source: NVD
UN
Unbound · Nlnetlabs
before 1.6.8 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2017-15105
CVE.org
https://www.cve.org/CVERecord?id=CVE-2017-15105
Third Party Advisory
http://www.securityfocus.com/bid/102817
Mailing List
https://lists.debian.org/debian-lts-announce/2018/01/msg00039.html
Mailing List
https://lists.debian.org/debian-lts-announce/2019/02/msg00022.html
Patch
https://unbound.net/downloads/CVE-2017-15105.txt
Third Party Advisory
https://usn.ubuntu.com/3673-1/
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