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mscveMicrosoftMS:CVE-2018-8320
HistoryOct 09, 2018 - 7:00 a.m.

Windows DNS Security Feature Bypass Vulnerability

2018-10-0907:00:00
Microsoft
msrc.microsoft.com
13

4.3 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

4 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

AV:N/AC:L/Au:S/C:P/I:N/A:N

0.002 Low

EPSS

Percentile

55.9%

A security feature bypass vulnerability exists in DNS Global Blocklist feature.

An attacker who successfully exploited this vulnerability could redirect traffic to malicious DNS endpoints.

The update addresses the vulnerability by updating DNS Server Role record additions to not bypass the Global Query Blocklist.

4.3 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

4 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

AV:N/AC:L/Au:S/C:P/I:N/A:N

0.002 Low

EPSS

Percentile

55.9%