CVE-2020-0856 — Active Directory Information Disclosure Vulnerability
Executive Summary
An information disclosure vulnerability exists when Active Directory integrated DNS (ADIDNS) mishandles objects in memory. An authenticated attacker who successfully exploited this vulnerability would be able to read sensitive information about the target system. To exploit this condition, an authenticated attacker would need to send a specially crafted request to the AD|DNS service. Note that the information disclosure vulnerability by itself would not be sufficient for an attacker to compromise a system. However, an attacker could combine this vulnerability with additional vulnerabilities to further exploit the system. The update addresses the vulnerability by correcting how Active Directory integrated DNS (ADIDNS) handles objects in memory.
Overview
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C
EPSS Score
Affected Products
| Product | KB Article | Severity | Impact | Restart Required |
|---|---|---|---|---|
| Windows Server 2008 for 32-bit Systems Service Pack 2 4577064 (Monthly Rollup) 4577070 (Security Only) Important Information Disclosure 4571730 Base: 6.5 Temporal: 5.9 Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C Yes 4577064 4577070 Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation) 4577064 (Monthly Rollup) 4577070 (Security Only) Important Information Disclosure 4571730 Base: 6.5 Temporal: 5.9 Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C Yes 4577064 4577070 Windows Server 2008 for x64-based Systems Service Pack 2 4577064 (Monthly Rollup) 4577070 (Security Only) Important Information Disclosure 4571730 Base: 6.5 Temporal: 5.9 Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C Yes 4577064 4577070 Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) 4577064 (Monthly Rollup) 4577070 (Security Only) Important Information Disclosure 4571730 Base: 6.5 Temporal: 5.9 Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C Yes 4577064 4577070 Windows Server 2008 R2 for x64-based Systems Service Pack 1 4577051 (Monthly Rollup) 4577053 (Security Only) Important Information Disclosure 4571729 Base: 6.5 Temporal: 5.9 Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C Yes 4577051 4577053 Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) 4577051 (Monthly Rollup) 4577053 (Security Only) Important Information Disclosure 4571729 Base: 6.5 Temporal: 5.9 Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C Yes 4577051 4577053 Windows Server 2012 4577038 (Monthly Rollup) 4577048 (Security Only) Important Information Disclosure 4571736 Base: 6.5 Temporal: 5.9 Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C Yes 4577038 4577048 Windows Server 2012 (Server Core installation) 4577038 (Monthly Rollup) 4577048 (Security Only) Important Information Disclosure 4571736 Base: 6.5 Temporal: 5.9 Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C Yes 4577038 4577048 Windows Server 2012 R2 4577066 (Monthly Rollup) 4577071 (Security Only) Important Information Disclosure 4571703 Base: 6.5 Temporal: 5.9 Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C Yes 4577066 4577071 Windows Server 2012 R2 (Server Core installation) 4577066 (Monthly Rollup) 4577071 (Security Only) Important Information Disclosure 4571703 Base: 6.5 Temporal: 5.9 Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C Yes 4577066 4577071 Windows Server 2016 | 4577015 (Security Update) |
Important | Information Disclosure | Yes |
| Windows Server 2016 (Server Core installation) | 4577015 (Security Update) |
Important | Information Disclosure | Yes |
| Windows Server 2019 | 4570333 (Security Update) |
Important | Information Disclosure | Yes |
| Windows Server 2019 (Server Core installation) | 4570333 (Security Update) |
Important | Information Disclosure | Yes |
| Windows Server, version 1903 (Server Core installation) | 4574727 (Security Update) |
Important | Information Disclosure | Yes |
| Windows Server, version 1909 (Server Core installation) | 4574727 (Security Update) |
Important | Information Disclosure | Yes |
| Windows Server, version 2004 (Server Core installation) | 4571756 (Security Update) |
Important | Information Disclosure | Yes |
Patches
| Article | Type | Restart |
|---|---|---|
4577015 |
Security Update | Yes |
4570333 |
Security Update | Yes |
4574727 |
Security Update | Yes |
4571756 |
Security Update | Yes |