SB2018012227 - Fedora 27 update for unbound
Published: January 22, 2018 Updated: April 24, 2025
Security Bulletin ID
SB2018012227
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Input validation error (CVE-ID: CVE-2017-15105)
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.