Improper Input Validation Affecting unbound package, versions [,1.6.8)


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.68% (71st percentile)

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  • Snyk IDSNYK-UNMANAGED-UNBOUND-2374292
  • published26 Jan 2022
  • disclosed23 Jan 2018
  • creditUnknown

Introduced: 23 Jan 2018

CVE-2017-15105  (opens in a new tab)
CWE-20  (opens in a new tab)

How to fix?

Upgrade unbound to version 1.6.8 or higher.

Overview

Affected versions of this package are vulnerable to Improper Input Validation. 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.

References

CVSS Base Scores

version 3.1