cvelist/2020/26xxx/CVE-2020-26276.json

{
    "CVE_data_meta": {
        "ASSIGNER": "security-advisories@github.com",
        "ID": "CVE-2020-26276",
        "STATE": "PUBLIC",
        "TITLE": "SAML authentication vulnerability in Fleet"
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "product": {
                        "product_data": [
                            {
                                "product_name": "fleet",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_value": "< 3.5.1"
                                        }
                                    ]
                                }
                            }
                        ]
                    },
                    "vendor_name": "fleetdm"
                }
            ]
        }
    },
    "data_format": "MITRE",
    "data_type": "CVE",
    "data_version": "4.0",
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "Fleet is an open source osquery manager. In Fleet before version 3.5.1, due to issues in Go's standard library XML parsing, a valid SAML response may be mutated by an attacker to modify the trusted document. This can result in allowing unverified logins from a SAML IdP. Users that configure Fleet with SSO login may be vulnerable to this issue. This issue is patched in 3.5.1. The fix was made using https://github.com/mattermost/xml-roundtrip-validator If upgrade to 3.5.1 is not possible, users should disable SSO authentication in Fleet."
            }
        ]
    },
    "impact": {
        "cvss": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 10,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H",
            "version": "3.1"
        }
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "CWE-290: Authentication Bypass by Spoofing"
                    }
                ]
            }
        ]
    },
    "references": {
        "reference_data": [
            {
                "name": "https://github.com/fleetdm/fleet/security/advisories/GHSA-w3wf-cfx3-6gcx",
                "refsource": "CONFIRM",
                "url": "https://github.com/fleetdm/fleet/security/advisories/GHSA-w3wf-cfx3-6gcx"
            },
            {
                "name": "https://github.com/fleetdm/fleet/commit/57812a532e5f749c8e18c6f6a652eca65c083607",
                "refsource": "MISC",
                "url": "https://github.com/fleetdm/fleet/commit/57812a532e5f749c8e18c6f6a652eca65c083607"
            },
            {
                "name": "https://github.com/fleetdm/fleet/blob/master/CHANGELOG.md#fleet-351-dec-14-2020",
                "refsource": "MISC",
                "url": "https://github.com/fleetdm/fleet/blob/master/CHANGELOG.md#fleet-351-dec-14-2020"
            },
            {
                "name": "https://github.com/mattermost/xml-roundtrip-validator",
                "refsource": "MISC",
                "url": "https://github.com/mattermost/xml-roundtrip-validator"
            },
            {
                "name": "https://mattermost.com/blog/coordinated-disclosure-go-xml-vulnerabilities",
                "refsource": "MISC",
                "url": "https://mattermost.com/blog/coordinated-disclosure-go-xml-vulnerabilities"
            }
        ]
    },
    "source": {
        "advisory": "GHSA-w3wf-cfx3-6gcx",
        "discovery": "UNKNOWN"
    }
}