CVE-2020-1045

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2020-1045
<p>A security feature bypass vulnerability exists in the way Microsoft ASP.NET Core parses encoded cookie names.</p> <p>The ASP.NET Core cookie parser decodes entire cookie strings which could allow a malicious attacker to set a second cookie with the name being percent encoded.</p> <p>The security update addresses the vulnerability by fixing the way the ASP.NET Core cookie parser handles encoded names.</p>

7.5 /10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

5.0 /10

CVSS v2.0 : MEDIUM

V2 Legend

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

Exploitability : 10.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact PARTIAL

Availability Impact NONE

References
Link Resource
https://access.redhat.com/errata/RHSA-2020:3699 Third Party Advisory
https://github.com/dotnet/core/blob/main/release-notes/3.1/3.1.8/3.1.8.md#changes-in-318 Release Notes Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5LN2FUVBSVPGK7AU3NMLO3YR6CGONQPB/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ASICXQXS4M7MTAF6SGQMCLCA63DLCUT3/
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1045 Patch Vendor Advisory
https://security.snyk.io/vuln/SNYK-RHEL8-DOTNET-1439600 Third Party Advisory
Configurations

Configuration 1 (hide)

OR cpe:2.3:a:microsoft:asp.net_core:*:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:asp.net_core:*:*:*:*:*:*:*:*

Configuration 2 (hide)

OR cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*

Configuration 3 (hide)

OR cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_aus:8.2:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_aus:8.4:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_aus:8.6:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_eus:8.2:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_eus:8.4:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_eus:8.6:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_tus:8.2:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_tus:8.4:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_tus:8.6:*:*:*:*:*:*:*
History

31 Dec 2023, 22:15

Type Values Removed Values Added
References
  • {'url': 'https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/5LN2FUVBSVPGK7AU3NMLO3YR6CGONQPB/', 'name': 'FEDORA-2020-e2deb72e0f', 'tags': ['Mailing List', 'Third Party Advisory'], 'refsource': 'FEDORA'}
  • {'url': 'https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ASICXQXS4M7MTAF6SGQMCLCA63DLCUT3/', 'name': 'FEDORA-2020-48fa1ad65c', 'tags': ['Mailing List', 'Third Party Advisory'], 'refsource': 'FEDORA'}
  • () https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ASICXQXS4M7MTAF6SGQMCLCA63DLCUT3/ -
  • () https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5LN2FUVBSVPGK7AU3NMLO3YR6CGONQPB/ -
Summary A security feature bypass vulnerability exists in the way Microsoft ASP.NET Core parses encoded cookie names.The ASP.NET Core cookie parser decodes entire cookie strings which could allow a malicious attacker to set a second cookie with the name being percent encoded.The security update addresses the vulnerability by fixing the way the ASP.NET Core cookie parser handles encoded names., aka 'Microsoft ASP.NET Core Security Feature Bypass Vulnerability'. <p>A security feature bypass vulnerability exists in the way Microsoft ASP.NET Core parses encoded cookie names.</p> <p>The ASP.NET Core cookie parser decodes entire cookie strings which could allow a malicious attacker to set a second cookie with the name being percent encoded.</p> <p>The security update addresses the vulnerability by fixing the way the ASP.NET Core cookie parser handles encoded names.</p>

12 Dec 2022, 18:29

Type Values Removed Values Added
CPE cpe:2.3:o:redhat:enterprise_linux_tus:8.4:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_tus:8.6:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_tus:8.2:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_aus:8.4:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_eus:8.6:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_aus:8.2:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_aus:8.6:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_eus:8.4:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_eus:8.2:*:*:*:*:*:*:*
References (MISC) https://security.snyk.io/vuln/SNYK-RHEL8-DOTNET-1439600 - (MISC) https://security.snyk.io/vuln/SNYK-RHEL8-DOTNET-1439600 - Third Party Advisory
References (MISC) https://access.redhat.com/errata/RHSA-2020:3699 - (MISC) https://access.redhat.com/errata/RHSA-2020:3699 - Third Party Advisory
References (CONFIRM) https://github.com/dotnet/core/blob/main/release-notes/3.1/3.1.8/3.1.8.md#changes-in-318 - (CONFIRM) https://github.com/dotnet/core/blob/main/release-notes/3.1/3.1.8/3.1.8.md#changes-in-318 - Release Notes, Third Party Advisory

23 Nov 2022, 18:15

Type Values Removed Values Added
References
  • (MISC) https://security.snyk.io/vuln/SNYK-RHEL8-DOTNET-1439600 -
  • (MISC) https://access.redhat.com/errata/RHSA-2020:3699 -
  • (CONFIRM) https://github.com/dotnet/core/blob/main/release-notes/3.1/3.1.8/3.1.8.md#changes-in-318 -
CPE cpe:2.3:a:microsoft:asp.net_core:2.1:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:asp.net_core:3.1:*:*:*:*:*:*:*		 cpe:2.3:a:microsoft:asp.net_core:*:*:*:*:*:*:*:*

02 Sep 2022, 15:34

Type Values Removed Values Added
CPE cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
References (FEDORA) https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ASICXQXS4M7MTAF6SGQMCLCA63DLCUT3/ - (FEDORA) https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ASICXQXS4M7MTAF6SGQMCLCA63DLCUT3/ - Mailing List, Third Party Advisory
References (FEDORA) https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/5LN2FUVBSVPGK7AU3NMLO3YR6CGONQPB/ - (FEDORA) https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/5LN2FUVBSVPGK7AU3NMLO3YR6CGONQPB/ - Mailing List, Third Party Advisory
Information

Published : 2020-09-11 17:15

Updated : 2024-02-04 21:00

NVD link : CVE-2020-1045

Mitre link : CVE-2020-1045

CVE.ORG link : CVE-2020-1045

JSON object : View

Products Affected

redhat

  • enterprise_linux_aus
  • enterprise_linux
  • enterprise_linux_tus
  • enterprise_linux_eus

fedoraproject

  • fedora

microsoft

  • asp.net_core
CWE
NVD-CWE-noinfo