cvelist/2021/3xxx/CVE-2021-3521.json

{
    "data_version": "4.0",
    "data_type": "CVE",
    "data_format": "MITRE",
    "CVE_data_meta": {
        "ID": "CVE-2021-3521",
        "ASSIGNER": "secalert@redhat.com",
        "STATE": "PUBLIC"
    },
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "There is a flaw in RPM's signature functionality. OpenPGP subkeys are associated with a primary key via a \"binding signature.\"[1] RPM does not check the binding signature of subkeys prior to importing them. If an attacker is able to add or socially engineer another party to add a malicious subkey to a legitimate public key, RPM could wrongly trust a malicious signature. The greatest impact of this flaw is to data integrity. 1. https://tools.ietf.org/html/rfc4880#section-5.2.1"
            }
        ]
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "Improper Verification of Cryptographic Signature",
                        "cweId": "CWE-347"
                    }
                ]
            }
        ]
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "vendor_name": "Red Hat",
                    "product": {
                        "product_data": [
                            {
                                "product_name": "Red Hat Enterprise Linux 8",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_value": "0:4.14.3-19.el8_5.2",
                                            "version_affected": "!"
                                        }
                                    ]
                                }
                            },
                            {
                                "product_name": "Red Hat Enterprise Linux 8.2 Extended Update Support",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_value": "0:4.14.2-40.el8_2",
                                            "version_affected": "!"
                                        }
                                    ]
                                }
                            },
                            {
                                "product_name": "Red Hat Enterprise Linux 8.4 Extended Update Support",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_value": "0:4.14.3-14.el8_4.2",
                                            "version_affected": "!"
                                        }
                                    ]
                                }
                            }
                        ]
                    }
                }
            ]
        }
    },
    "references": {
        "reference_data": [
            {
                "url": "https://access.redhat.com/security/cve/CVE-2021-3521",
                "refsource": "MISC",
                "name": "https://access.redhat.com/security/cve/CVE-2021-3521"
            },
            {
                "url": "https://github.com/rpm-software-management/rpm/pull/1795/",
                "refsource": "MISC",
                "name": "https://github.com/rpm-software-management/rpm/pull/1795/"
            },
            {
                "url": "https://github.com/rpm-software-management/rpm/commit/bd36c5dc9fb6d90c46fbfed8c2d67516fc571ec8",
                "refsource": "MISC",
                "name": "https://github.com/rpm-software-management/rpm/commit/bd36c5dc9fb6d90c46fbfed8c2d67516fc571ec8"
            },
            {
                "url": "https://access.redhat.com/errata/RHSA-2022:0254",
                "refsource": "MISC",
                "name": "https://access.redhat.com/errata/RHSA-2022:0254"
            },
            {
                "url": "https://access.redhat.com/errata/RHSA-2022:0368",
                "refsource": "MISC",
                "name": "https://access.redhat.com/errata/RHSA-2022:0368"
            },
            {
                "url": "https://access.redhat.com/errata/RHSA-2022:0634",
                "refsource": "MISC",
                "name": "https://access.redhat.com/errata/RHSA-2022:0634"
            },
            {
                "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1941098",
                "refsource": "MISC",
                "name": "https://bugzilla.redhat.com/show_bug.cgi?id=1941098"
            },
            {
                "url": "https://security.gentoo.org/glsa/202210-22",
                "refsource": "MISC",
                "name": "https://security.gentoo.org/glsa/202210-22"
            }
        ]
    },
    "credits": [
        {
            "lang": "en",
            "value": "Red Hat would like to thank Demi M. Obenour for reporting this issue."
        }
    ],
    "impact": {
        "cvss": [
            {
                "attackComplexity": "HIGH",
                "attackVector": "LOCAL",
                "availabilityImpact": "NONE",
                "baseScore": 4.4,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "NONE",
                "integrityImpact": "HIGH",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "REQUIRED",
                "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:N/I:H/A:N",
                "version": "3.1"
            }
        ]
    }
}