SB2019110124 - Fedora 30 update for unbound
Published: November 1, 2019 Updated: April 25, 2025
Security Bulletin ID
SB2019110124
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Buffer overflow (CVE-ID: CVE-2019-16866)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack
The vulnerability exists due to a boundary error when processing NOTIFY queries in Unbound. A remote attacker can send a specially crafted NOTIFY query, trigger uninitialized memory access and crash the service.
Successful exploitation of this vulnerability requires that the source IP address of the query matches an access-control rule.
Remediation
Install update from vendor's website.