CVE-2020-1045

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Source
https://cve.org/CVERecord?id=CVE-2020-1045
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-1045.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2020-1045
Aliases
Downstream
Published
2020-09-11T17:15:18.307Z
Modified
2026-04-10T04:18:31.065085Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N CVSS Calculator
Summary
[none]
Details

<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>

References

Affected packages

Git / github.com/dotnet/aspnetcore

Affected ranges

Type
GIT
Repo
https://github.com/dotnet/aspnetcore
Events
Introduced
00e08d8c11f4e9649492342c9c613a758efd2e4d
Last affected
adc6f4d362456fd5a4d6f35e66a10bb8b1660470
Introduced
03019875e4eab279a99ba3ba5ee75fb0e4935ce6
Fixed
c75b3f7a2fb9fe21fd96c93c070fdfa88a2fbe97
Introduced
0 Unknown introduced commit / All previous commits are affected
Last affected
3f1acb59718cadf111a0a796681e3d3509bb3381
Database specific 
{
    "versions": [
        {
            "introduced": "2.1"
        },
        {
            "last_affected": "2.1.21"
        },
        {
            "introduced": "3.1"
        },
        {
            "fixed": "3.1.8"
        },
        {
            "introduced": "0"
        },
        {
            "last_affected": "8.0"
        }
    ]
}

Affected versions

1.*
1.0.0
1.0.0-rc2
1.0.0-rc2-final
1.0.1
1.0.3
1.0.4
1.0.5
1.0.7
1.1.0
1.1.0-preview1
1.1.1
1.1.2
1.1.3
1.1.5
2.*
2.0.0
2.0.0-preview1
2.0.0-preview2
2.1.0
2.1.0-preview1
2.1.0-preview2
2.1.1
2.1.3
2.1.5
2.1.6
v1.*
v1.0.0-alpha2
v1.0.0-alpha3
v1.0.0-beta4
v1.0.0-beta5
v1.0.0-beta6
v1.0.0-beta7
v1.0.0-beta8
v1.0.0-rc1-final
v1.0.0-rc1-update1
v2.*
v2.1.10
v2.1.11
v2.1.12
v2.1.13
v2.1.14
v2.1.16
v2.1.17
v2.1.18
v2.1.19
v2.1.20
v2.1.21
v2.1.7
v2.1.8
v2.1.9
v3.*
v3.0.0-preview-18579-0056
v3.0.0-preview-19075-0444
v3.1.0
v3.1.0-preview3.19555.2
v3.1.2
v3.1.3
v8.*
v8.0.0

Database specific

unresolved_ranges 
[
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "32"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "33"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "8.2"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "8.4"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "8.6"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "8.2"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "8.4"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "8.6"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "8.2"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "8.4"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "8.6"
            }
        ]
    }
]
source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-1045.json"