{ "dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": { "state": "PUBLISHED", "cveId": "CVE-2020-1045", "assignerOrgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8", "assignerShortName": "microsoft", "dateUpdated": "2024-11-18T16:25:38.621Z", "dateReserved": "2019-11-04T00:00:00.000Z", "datePublished": "2020-09-11T00:00:00.000Z" }, "containers": { "cna": { "title": "Microsoft ASP.NET Core Security Feature Bypass Vulnerability", "datePublic": "2020-09-08T07:00:00.000Z", "affected": [ { "vendor": "Microsoft", "product": "ASP.NET Core 2.1", "cpes": [ "cpe:2.3:a:microsoft:asp.net_core:2.1*:*:*:*:*:*:*:*" ], "platforms": [ "Unknown" ], "versions": [ { "version": "2.0", "lessThan": "publication", "versionType": "custom", "status": "affected" } ] }, { "vendor": "Microsoft", "product": "ASP.NET Core 3.1", "cpes": [ "cpe:2.3:a:microsoft:asp.net_core:3.1:*:*:*:*:*:*:*" ], "platforms": [ "Unknown" ], "versions": [ { "version": "3.0", "lessThan": "publication", "versionType": "custom", "status": "affected" } ] } ], "descriptions": [ { "value": "
A security feature bypass vulnerability exists in the way Microsoft ASP.NET Core parses encoded cookie names.
\nThe 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.
\nThe security update addresses the vulnerability by fixing the way the ASP.NET Core cookie parser handles encoded names.
", "lang": "en-US" } ], "problemTypes": [ { "descriptions": [ { "description": "Security Feature Bypass", "lang": "en-US", "type": "Impact" } ] } ], "providerMetadata": { "orgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8", "shortName": "microsoft", "dateUpdated": "2023-12-31T21:34:37.415Z" }, "references": [ { "url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1045" }, { "name": "FEDORA-2020-e2deb72e0f", "tags": [ "vendor-advisory" ], "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5LN2FUVBSVPGK7AU3NMLO3YR6CGONQPB/" }, { "name": "FEDORA-2020-48fa1ad65c", "tags": [ "vendor-advisory" ], "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ASICXQXS4M7MTAF6SGQMCLCA63DLCUT3/" }, { "url": "https://github.com/dotnet/core/blob/main/release-notes/3.1/3.1.8/3.1.8.md#changes-in-318" }, { "url": "https://security.snyk.io/vuln/SNYK-RHEL8-DOTNET-1439600" }, { "url": "https://access.redhat.com/errata/RHSA-2020:3699" } ], "metrics": [ { "format": "CVSS", "scenarios": [ { "lang": "en-US", "value": "GENERAL" } ], "cvssV3_1": { "version": "3.1", "baseSeverity": "HIGH", "baseScore": 7.5, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N/E:P/RL:O/RC:C" } } ] }, "adp": [ { "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T06:25:01.041Z" }, "title": "CVE Program Container", "references": [ { "url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1045", "tags": [ "x_transferred" ] }, { "name": "FEDORA-2020-e2deb72e0f", "tags": [ "vendor-advisory", "x_transferred" ], "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5LN2FUVBSVPGK7AU3NMLO3YR6CGONQPB/" }, { "name": "FEDORA-2020-48fa1ad65c", "tags": [ "vendor-advisory", "x_transferred" ], "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ASICXQXS4M7MTAF6SGQMCLCA63DLCUT3/" }, { "url": "https://github.com/dotnet/core/blob/main/release-notes/3.1/3.1.8/3.1.8.md#changes-in-318", "tags": [ "x_transferred" ] }, { "url": "https://security.snyk.io/vuln/SNYK-RHEL8-DOTNET-1439600", "tags": [ "x_transferred" ] }, { "url": "https://access.redhat.com/errata/RHSA-2020:3699", "tags": [ "x_transferred" ] } ] }, { "metrics": [ { "other": { "type": "ssvc", "content": { "timestamp": "2024-01-10T18:21:43.315688Z", "id": "CVE-2020-1045", "options": [ { "Exploitation": "none" }, { "Automatable": "yes" }, { "Technical Impact": "partial" } ], "role": "CISA Coordinator", "version": "2.0.3" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-11-18T16:25:38.621Z" } } ] } }