cvelist/2022/39xxx/CVE-2022-39209.json

{
    "CVE_data_meta": {
        "ASSIGNER": "security-advisories@github.com",
        "ID": "CVE-2022-39209",
        "STATE": "PUBLIC",
        "TITLE": "Uncontrolled Resource Consumption in cmark-gfm"
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "product": {
                        "product_data": [
                            {
                                "product_name": "cmark-gfm",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_value": "< 0.29.0.gfm.6"
                                        }
                                    ]
                                }
                            }
                        ]
                    },
                    "vendor_name": "github"
                }
            ]
        }
    },
    "data_format": "MITRE",
    "data_type": "CVE",
    "data_version": "4.0",
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "cmark-gfm is GitHub's fork of cmark, a CommonMark parsing and rendering library and program in C. In versions prior to 0.29.0.gfm.6 a polynomial time complexity issue in cmark-gfm's autolink extension may lead to unbounded resource exhaustion and subsequent denial of service. Users may verify the patch by running `python3 -c 'print(\"![l\"* 100000 + \"\\n\")' | ./cmark-gfm -e autolink`, which will resource exhaust on unpatched cmark-gfm but render correctly on patched cmark-gfm. This vulnerability has been patched in 0.29.0.gfm.6. Users are advised to upgrade. Users unable to upgrade should disable the use of the autolink extension."
            }
        ]
    },
    "impact": {
        "cvss": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
        }
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "CWE-400: Uncontrolled Resource Consumption"
                    }
                ]
            }
        ]
    },
    "references": {
        "reference_data": [
            {
                "name": "https://github.com/github/cmark-gfm/security/advisories/GHSA-cgh3-p57x-9q7q",
                "refsource": "CONFIRM",
                "url": "https://github.com/github/cmark-gfm/security/advisories/GHSA-cgh3-p57x-9q7q"
            },
            {
                "name": "https://github.com/github/cmark-gfm/commit/9d57d8a23142b316282bdfc954cb0ecda40a8655",
                "refsource": "MISC",
                "url": "https://github.com/github/cmark-gfm/commit/9d57d8a23142b316282bdfc954cb0ecda40a8655"
            },
            {
                "name": "https://en.wikipedia.org/wiki/Time_complexity",
                "refsource": "MISC",
                "url": "https://en.wikipedia.org/wiki/Time_complexity"
            },
            {
                "refsource": "FEDORA",
                "name": "FEDORA-2022-6bcee2cc93",
                "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/JMGP65NANDVKPDMXMKYO2ZV2H2HZJY4P/"
            },
            {
                "refsource": "FEDORA",
                "name": "FEDORA-2022-f1aed93db8",
                "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/JIUCZN3PEKUCT2JQYQTYOVIJG2KSD6G7/"
            },
            {
                "refsource": "FEDORA",
                "name": "FEDORA-2022-dc6d6d9d6c",
                "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UEAAAI4OULDYQ2TA3HOXH54PC3DCBFZS/"
            }
        ]
    },
    "source": {
        "advisory": "GHSA-cgh3-p57x-9q7q",
        "discovery": "UNKNOWN"
    }
}