Public Date:
1631131: CVE-2018-5741 bind: Incorrect documentation of krb5-subdomain and ms-subdomain update policies

The MITRE CVE dictionary describes this issue as:

To provide fine-grained controls over the ability to use Dynamic DNS (DDNS) to update records in a zone, BIND 9 provides a feature called update-policy. Various rules can be configured to limit the types of updates that can be performed by a client, depending on the key used when sending the update request. Unfortunately, some rule types were not initially documented, and when documentation for them was added to the Administrator Reference Manual (ARM) in change #3112, the language that was added to the ARM at that time incorrectly described the behavior of two rule types, krb5-subdomain and ms-subdomain. This incorrect documentation could mislead operators into believing that policies they had configured were more restrictive than they actually were. This affects BIND versions prior to BIND 9.11.5 and BIND 9.12.3.

Find out more about CVE-2018-5741 from the MITRE CVE dictionary dictionary and NIST NVD.

CVSS v3 metrics

NOTE: The following CVSS v3 metrics and score provided are preliminary and subject to review.

CVSS3 Base Score 6.5
CVSS3 Base Metrics CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity Impact High
Availability Impact None

Affected Packages State

Platform Package State
Red Hat Virtualization 4 bind Not affected
Red Hat Enterprise Linux 8 bind Affected
Red Hat Enterprise Linux 7 bind Affected
Red Hat Enterprise Linux 6 bind Will not fix
Red Hat Enterprise Linux 5 bind97 Not affected
Red Hat Enterprise Linux 5 bind Not affected

External References

Last Modified

CVE description copyright © 2017, The MITRE Corporation