#VU31359 Input validation error in Unbound - CVE-2017-15105

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Main Vulnerability Database Vulnerabilities #VU31359

#VU31359 Input validation error in Unbound - CVE-2017-15105

Published: January 23, 2018 / Updated: July 17, 2020


Vulnerability identifier: #VU31359
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2017-15105
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
Unbound
Software vendor:
NLnet Labs

Description

The vulnerability allows a remote non-authenticated attacker to manipulate data.

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.


Remediation

Install update from vendor's website.

External links