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ISC BIND update-policy Enforcement Vulnerability - CVE-2020-8624 (Linux)

Information

Severity

Severity

Medium

Family

Family

General

CVSSv2 Base

CVSSv2 Base

4.0

CVSSv2 Vector

CVSSv2 Vector

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

Solution Type

Solution Type

Vendor Patch

Created

Created

3 years ago

Modified

Modified

3 years ago

Summary

ISC BIND is prone to a vulnerability where update-policy rules of type 'subdomain' are enforced incorrectly.

Insight

Insight

Change 4885 inadvertently caused 'update-policy' rules of type 'subdomain' to be treated as if they were of type 'zonesub', allowing updates to all parts of the zone along with the intended subdomain.

Affected Software

Affected Software

BIND 9.9.12 - 9.9.13, 9.10.7 - 9.10.8, 9.11.3 - 9.11.21, 9.12.1 - 9.16.5, 9.17.0 - 9.17.3, also affects 9.9.12-S1 - 9.9.13-S1 and 9.11.3-S1 - 9.11.21-S1.

Detection Method

Detection Method

Checks if a vulnerable version is present on the target host.

Solution

Solution

Update to version 9.11.22, 9.16.6, 9.17.4, 9.11.22-S1 or later.

Common Vulnerabilities and Exposures (CVE)