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[email protected]NVD:CVE-2020-1476

HistoryAug 17, 2020 - 7:15 p.m.

CVE-2020-1476

2020-08-1719:15:15

[email protected]

web.nvd.nist.gov

elevation of privilege

asp.net

.net

iis

cached files

vulnerability

access restrictions

specially crafted request

security update

CVSS2

2.1

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

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

CVSS3

5.5

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

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

AI Score

6.8

Confidence

High

EPSS

Percentile

9.5%

JSON

An elevation of privilege vulnerability exists when ASP.NET or .NET web applications running on IIS improperly allow access to cached files. An attacker who successfully exploited this vulnerability could gain access to restricted files.
To exploit this vulnerability, an attacker would need to send a specially crafted request to an affected server.
The update addresses the vulnerability by changing how ASP.NET and .NET handle requests.

Affected configurations

Nvd

Node

microsoft.net_frameworkMatch2.0sp2

AND

microsoftwindows_server_2008Match-sp2

Node

microsoft.net_frameworkMatch3.5

AND

microsoftwindows_8.1Match-

microsoftwindows_server_2012Match-

microsoftwindows_server_2012Matchr2

Node

microsoft.net_frameworkMatch3.5

microsoft.net_frameworkMatch4.6.2

microsoft.net_frameworkMatch4.7

microsoft.net_frameworkMatch4.7.1

microsoft.net_frameworkMatch4.7.2

AND

microsoftwindows_10Match1607

microsoftwindows_server_2016Match-

Node

microsoft.net_frameworkMatch3.5

microsoft.net_frameworkMatch4.6

microsoft.net_frameworkMatch4.6.1

microsoft.net_frameworkMatch4.6.2

AND

microsoftwindows_10Match-

Node

microsoft.net_frameworkMatch3.5

microsoft.net_frameworkMatch4.7.1

microsoft.net_frameworkMatch4.7.2

AND

microsoftwindows_10Match1709

Node

microsoft.net_frameworkMatch3.5

microsoft.net_frameworkMatch4.7.2

AND

microsoftwindows_10Match1803

microsoftwindows_10Match1809

microsoftwindows_server_2019Match-

Node

microsoft.net_frameworkMatch3.5

microsoft.net_frameworkMatch4.8

AND

microsoftwindows_10Match1809

microsoftwindows_10Match1903

microsoftwindows_10Match1909

microsoftwindows_10Match2004

microsoftwindows_server_2019Match-

Node

microsoft.net_frameworkMatch3.5.1

AND

microsoftwindows_7Matchsp1

microsoftwindows_server_2008Matchr2

Node

microsoft.net_frameworkMatch4.5.2

AND

microsoftwindows_7Match-sp1

microsoftwindows_8.1Match-

microsoftwindows_rt_8.1Match-

microsoftwindows_server_2008Match-sp2

microsoftwindows_server_2008Matchr2sp1x64

microsoftwindows_server_2012Match-

microsoftwindows_server_2012Matchr2

Node

microsoft.net_frameworkMatch4.6

AND

microsoftwindows_server_2008Match-sp2

Node

microsoft.net_frameworkMatch4.6

microsoft.net_frameworkMatch4.6.1

microsoft.net_frameworkMatch4.6.2

microsoft.net_frameworkMatch4.7

microsoft.net_frameworkMatch4.7.1

microsoft.net_frameworkMatch4.7.2

AND

microsoftwindows_7Match-sp1

microsoftwindows_8.1Match-

microsoftwindows_rt_8.1Match-

microsoftwindows_server_2008Matchr2sp1x64

microsoftwindows_server_2012Match-

microsoftwindows_server_2012Matchr2

Node

microsoft.net_frameworkMatch4.8

AND

microsoftwindows_10Match1607

microsoftwindows_10Match1709

microsoftwindows_10Match1803

microsoftwindows_7Match-sp1

microsoftwindows_8.1Match-

microsoftwindows_rt_8.1Match-

microsoftwindows_server_2008Matchr2sp1x64

microsoftwindows_server_2012Match-

microsoftwindows_server_2012Matchr2

microsoftwindows_server_2016Match-

VendorProductVersionCPE
microsoft.net_framework2.0cpe:2.3:a:microsoft:.net_framework:2.0:sp2:*:*:*:*:*:*
microsoftwindows_server_2008-cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:*:*
microsoft.net_framework3.5cpe:2.3:a:microsoft:.net_framework:3.5:*:*:*:*:*:*:*
microsoftwindows_8.1-cpe:2.3:o:microsoft:windows_8.1:-:*:*:*:*:*:*:*
microsoftwindows_server_2012-cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:*
microsoftwindows_server_2012r2cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:*
microsoft.net_framework4.6.2cpe:2.3:a:microsoft:.net_framework:4.6.2:*:*:*:*:*:*:*
microsoft.net_framework4.7cpe:2.3:a:microsoft:.net_framework:4.7:*:*:*:*:*:*:*
microsoft.net_framework4.7.1cpe:2.3:a:microsoft:.net_framework:4.7.1:*:*:*:*:*:*:*
microsoft.net_framework4.7.2cpe:2.3:a:microsoft:.net_framework:4.7.2:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
microsoft	.net_framework	2.0	cpe:2.3:a:microsoft:.net_framework:2.0:sp2::::::
microsoft	windows_server_2008	-	cpe:2.3:o:microsoft:windows_server_2008:-:sp2::::::
microsoft	.net_framework	3.5	cpe:2.3:a:microsoft:.net_framework:3.5:::::::*
microsoft	windows_8.1	-	cpe:2.3:o:microsoft:windows_8.1:-:::::::*
microsoft	windows_server_2012	-	cpe:2.3:o:microsoft:windows_server_2012:-:::::::*
microsoft	windows_server_2012	r2	cpe:2.3:o:microsoft:windows_server_2012:r2:::::::*
microsoft	.net_framework	4.6.2	cpe:2.3:a:microsoft:.net_framework:4.6.2:::::::*
microsoft	.net_framework	4.7	cpe:2.3:a:microsoft:.net_framework:4.7:::::::*
microsoft	.net_framework	4.7.1	cpe:2.3:a:microsoft:.net_framework:4.7.1:::::::*
microsoft	.net_framework	4.7.2	cpe:2.3:a:microsoft:.net_framework:4.7.2:::::::*