CVE-2019-0820

CVSS V2 Medium 5 CVSS V3 High 7.5
Description
A denial of service vulnerability exists when .NET Framework and .NET Core improperly process RegEx strings, aka '.NET Framework and .NET Core Denial of Service Vulnerability'. This CVE ID is unique from CVE-2019-0980, CVE-2019-0981.
Overview
  • CVE ID
  • CVE-2019-0820
  • Assigner
  • secure@microsoft.com
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2019-05-16T19:29:00
  • Last Modified Date
  • 2023-02-02T19:16:40
Weakness Enumerations
CWE URL
CWE-400 http://cwe.mitre.org/data/definitions/400.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
AND
cpe:2.3:a:microsoft:.net_core:1.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:microsoft:.net_core:1.1:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:microsoft:.net_core:2.1:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:microsoft:.net_core:2.2:*:*:*:*:*:*:* 1 OR
AND
cpe:2.3:a:microsoft:.net_framework:2.0:sp2:*:*:*:*:*:* 1 OR
cpe:2.3:a:microsoft:.net_framework:3.0:sp2:*:*:*:*:*:* 1 OR
cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:*:* 0 OR
AND
cpe:2.3:a:microsoft:.net_framework:3.5:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:microsoft:windows_10:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:o:microsoft:windows_10:1607:*:*:*:*:*:*:* 0 OR
cpe:2.3:o:microsoft:windows_10:1703:*:*:*:*:*:*:* 0 OR
cpe:2.3:o:microsoft:windows_10:1709:*:*:*:*:*:*:* 0 OR
cpe:2.3:o:microsoft:windows_10:1803:*:*:*:*:*:*:* 0 OR
cpe:2.3:o:microsoft:windows_10:1809:*:*:*:*:*:*:* 0 OR
cpe:2.3:o:microsoft:windows_10:1903:*:*:*:*:*:*:* 0 OR
cpe:2.3:o:microsoft:windows_8.1:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:* 0 OR
cpe:2.3:o:microsoft:windows_server_2016:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:o:microsoft:windows_server_2016:1803:*:*:*:*:*:*:* 0 OR
cpe:2.3:o:microsoft:windows_server_2016:1903:*:*:*:*:*:*:* 0 OR
cpe:2.3:o:microsoft:windows_server_2019:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:a:microsoft:.net_framework:3.5.1:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:microsoft:windows_7:-:sp1:*:*:*:*:*:* 0 OR
cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:itanium:* 0 OR
cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:x64:* 0 OR
AND
cpe:2.3:a:microsoft:.net_framework:4.5.2:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:microsoft:windows_7:-:sp1:*:*:*:*:*:* 0 OR
cpe:2.3:o:microsoft:windows_8.1:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:o:microsoft:windows_rt_8.1:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:*:* 0 OR
cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:x64:* 0 OR
cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:a:microsoft:.net_framework:4.6:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:*:* 0 OR
AND
cpe:2.3:a:microsoft:.net_framework:4.6.2:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:microsoft:windows_10:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:a:microsoft:.net_framework:4.6.2:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:microsoft:.net_framework:4.7:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:microsoft:.net_framework:4.7.1:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:microsoft:.net_framework:4.7.2:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:microsoft:windows_10:1607:*:*:*:*:*:*:* 0 OR
cpe:2.3:o:microsoft:windows_server_2016:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:a:microsoft:.net_framework:4.6:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:microsoft:.net_framework:4.6.1:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:microsoft:.net_framework:4.6.2:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:microsoft:.net_framework:4.7:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:microsoft:.net_framework:4.7.1:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:microsoft:.net_framework:4.7.2:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:microsoft:windows_7:-:sp1:*:*:*:*:*:* 0 OR
cpe:2.3:o:microsoft:windows_8.1:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:o:microsoft:windows_rt_8.1:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:x64:* 0 OR
cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:a:microsoft:.net_framework:4.7.1:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:microsoft:.net_framework:4.7.2:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:microsoft:windows_10:1709:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:a:microsoft:.net_framework:4.7.2:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:microsoft:windows_10:1803:*:*:*:*:*:*:* 0 OR
cpe:2.3:o:microsoft:windows_10:1809:*:*:*:*:*:*:* 0 OR
cpe:2.3:o:microsoft:windows_server_2019:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:a:microsoft:.net_framework:4.7:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:microsoft:.net_framework:4.7.1:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:microsoft:.net_framework:4.7.2:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:microsoft:windows_10:1703:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:a:microsoft:.net_framework:4.8:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:microsoft:windows_10:1607:*:*:*:*:*:*:* 0 OR
cpe:2.3:o:microsoft:windows_10:1703:*:*:*:*:*:*:* 0 OR
cpe:2.3:o:microsoft:windows_10:1709:*:*:*:*:*:*:* 0 OR
cpe:2.3:o:microsoft:windows_10:1803:*:*:*:*:*:*:* 0 OR
cpe:2.3:o:microsoft:windows_10:1809:*:*:*:*:*:*:* 0 OR
cpe:2.3:o:microsoft:windows_10:1903:*:*:*:*:*:*:* 0 OR
cpe:2.3:o:microsoft:windows_7:-:sp1:*:*:*:*:*:* 0 OR
cpe:2.3:o:microsoft:windows_8.1:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:o:microsoft:windows_rt_8.1:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:x64:* 0 OR
cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:* 0 OR
cpe:2.3:o:microsoft:windows_server_2016:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:o:microsoft:windows_server_2016:1803:*:*:*:*:*:*:* 0 OR
cpe:2.3:o:microsoft:windows_server_2016:1903:*:*:*:*:*:*:* 0 OR
cpe:2.3:o:microsoft:windows_server_2019:-:*:*:*:*:*:*:* 0 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:L/Au:N/C:N/I:N/A:P
  • Access Vector
  • NETWORK
  • Access Compatibility
  • LOW
  • Authentication
  • NONE
  • Confidentiality Impact
  • NONE
  • Integrity Impact
  • NONE
  • Availability Impact
  • PARTIAL
  • Base Score
  • 5
  • Severity
  • MEDIUM
  • Exploitability Score
  • 10
  • Impact Score
  • 2.9
CVSS Version 3
  • Version
  • 3.0
  • Vector String
  • CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • LOW
  • Privileges Required
  • NONE
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • NONE
  • Availability Impact
  • HIGH
  • Base Score
  • 7.5
  • Base Severity
  • HIGH
  • Exploitability Score
  • 3.9
  • Impact Score
  • 3.6
References
Reference URL Reference Tags
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0820 Patch Vendor Advisory
https://access.redhat.com/errata/RHSA-2019:1259
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2019-0820
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-0820
History
Created Old Value New Value Data Type Notes
2022-05-10 16:32:37 Added to TrackCVE
2022-12-03 20:47:23 2019-05-16T19:29Z 2019-05-16T19:29:00 CVE Published Date updated
2022-12-03 20:47:23 2020-08-24T17:37:01 CVE Modified Date updated
2022-12-03 20:47:23 Modified Vulnerability Status updated
2023-01-13 19:08:35 Modified Undergoing Analysis Vulnerability Status updated
2023-02-02 20:08:35 2023-02-02T19:16:40 CVE Modified Date updated
2023-02-02 20:08:35 Undergoing Analysis Analyzed Vulnerability Status updated