{
    "CVE_data_meta": {
        "ASSIGNER": "security@ubuntu.com",
        "DATE_PUBLIC": "2020-11-03T00:00:00.000Z",
        "ID": "CVE-2020-16127",
        "STATE": "PUBLIC",
        "TITLE": "accountsservice .pam_environment infinite loop"
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "product": {
                        "product_data": [
                            {
                                "product_name": "accountsservice",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_affected": "<",
                                            "version_name": "0.6.35-0ubuntu7.3",
                                            "version_value": "0.6.35-0ubuntu7.3+esm2"
                                        },
                                        {
                                            "version_affected": "<",
                                            "version_name": "0.6.40-2ubuntu11",
                                            "version_value": "0.6.40-2ubuntu11.6"
                                        },
                                        {
                                            "version_affected": "<",
                                            "version_name": "0.6.45-1ubuntu1",
                                            "version_value": "0.6.45-1ubuntu1.3"
                                        },
                                        {
                                            "version_affected": "<",
                                            "version_name": "0.6.55-0ubuntu",
                                            "version_value": "0.6.55-0ubuntu12~20.04.4"
                                        },
                                        {
                                            "version_affected": "<",
                                            "version_name": "0.6.55-0ubuntu13",
                                            "version_value": "0.6.55-0ubuntu13.2"
                                        }
                                    ]
                                }
                            }
                        ]
                    },
                    "vendor_name": "Freedesktop"
                }
            ]
        }
    },
    "credit": [
        {
            "lang": "eng",
            "value": "Kevin Backhouse"
        }
    ],
    "data_format": "MITRE",
    "data_type": "CVE",
    "data_version": "4.0",
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "An Ubuntu-specific modification to AccountsService in versions before 0.6.55-0ubuntu13.2, among other earlier versions, would perform unbounded read operations on user-controlled ~/.pam_environment files, allowing an infinite loop if /dev/zero is symlinked to this location."
            }
        ]
    },
    "generator": {
        "engine": "Vulnogram 0.0.9"
    },
    "impact": {
        "cvss": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "LOW",
            "baseScore": 2.8,
            "baseSeverity": "LOW",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L",
            "version": "3.1"
        }
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "CWE-20 Improper Input Validation"
                    }
                ]
            }
        ]
    },
    "references": {
        "reference_data": [
            {
                "refsource": "MISC",
                "url": "https://securitylab.github.com/advisories/GHSL-2020-187-accountsservice-drop-privs-DOS",
                "name": "https://securitylab.github.com/advisories/GHSL-2020-187-accountsservice-drop-privs-DOS"
            }
        ]
    },
    "source": {
        "advisory": "https://usn.ubuntu.com/usn/usn-4616-1",
        "defect": [
            "https://bugs.launchpad.net/ubuntu/+source/accountsservice/+bug/1900255"
        ],
        "discovery": "EXTERNAL"
    }
}