SB2019110125 - Fedora 31 update for unbound

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Main Vulnerability Database SB2019110125

SB2019110125 - Fedora 31 update for unbound

Published: November 1, 2019 Updated: April 25, 2025

Security Bulletin ID SB2019110125
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Denial of service

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Buffer overflow (CVE-ID: CVE-2019-16866)

CWE-ID: CWE-119 - Memory corruption

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green


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.

References