Home/CVE/A flaw was found in the way unbound before 1.6.8 validated wildcard-synthesized NSEC records. An improperly validated wi
CVE

CVE-2017-15105

A flaw was found in the way unbound before 1.6.8 validated wildcard-synthesized NSEC records. An improperly validated wi

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.

MEDIUM · CVSS 5.3 EPSS 0.00686
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-20Improper Input Validation
CWE-358Improperly Implemented Security Check for Standard
▤

Affected Products & Versions

3
nlnetlabs unbound< 1.6.8
debian linuxall versions
canonical ubuntu linuxall versions
▣

Scoring & Timeline

5.3
MEDIUM · CVSS v3.0 · secalert@redhat.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD23 Jan 2018 · 04:29 PM
CVSS VectorCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
⚑

Vendor Advisories

2
suse-csafopenSUSE-SU-2024:11005-1
usnUSN-3673-1
🔗

References & Sources

5
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://www.securityfocus.com/bid/102817Third Party AdvisoryVDB Entry
https://lists.debian.org/debian-lts-announce/2018/01/msg00039.htmlMailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2019/02/msg00022.htmlMailing ListThird Party Advisory
https://unbound.net/downloads/CVE-2017-15105.txtPatchVendor Advisory
https://usn.ubuntu.com/3673-1/Third Party Advisory
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