CVE-2019-6470

 

Published at: - 02-11-2019 12:15

Last modified: - 24-10-2022 05:01

Total changes: - 2

Description

There had existed in one of the ISC BIND libraries a bug in a function that was used by dhcpd when operating in DHCPv6 mode. There was also a bug in dhcpd relating to the use of this function per its documentation, but the bug in the library function prevented this from causing any harm. All releases of dhcpd from ISC contain copies of this, and other, BIND libraries in combinations that have been tested prior to release and are known to not present issues like this. Some third-party packagers of ISC software have modified the dhcpd source, BIND source, or version matchup in ways that create the crash potential. Based on reports available to ISC, the crash probability is large and no analysis has been done on how, or even if, the probability can be manipulated by an attacker. Affects: Builds of dhcpd versions prior to version 4.4.1 when using BIND versions 9.11.2 or later, or BIND versions with specific bug fixes backported to them. ISC does not have access to comprehensive version lists for all repackagings of dhcpd that are vulnerable. In particular, builds from other vendors may also be affected. Operators are advised to consult their vendor documentation.

Common Vulnerability Scoring System (CVSS)

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

 

Verification logic

 

Reference

• https://lists.opensuse.org/opensuse-security-announce/2019-10/msg00049.html
• https://access.redhat.com/errata/RHSA-2019:2060
• https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=896122
• https://lists.opensuse.org/opensuse-security-announce/2019-10/msg00048.html
• RHSA-2019:3525-Third Party Advisory

 

Keywords

NVD

 

CVE-2019-6470

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures