{
    "data_version": "4.0",
    "data_type": "CVE",
    "data_format": "MITRE",
    "CVE_data_meta": {
        "ID": "CVE-2021-3999",
        "ASSIGNER": "secalert@redhat.com",
        "STATE": "PUBLIC"
    },
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "A flaw was found in glibc. An off-by-one buffer overflow and underflow in getcwd() may lead to memory corruption when the size of the buffer is exactly 1. A local attacker who can control the input buffer and size passed to getcwd() in a setuid program could use this flaw to potentially execute arbitrary code and escalate their privileges on the system."
            }
        ]
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "CWE-193 - Off-by-one Error",
                        "cweId": "CWE-193"
                    }
                ]
            }
        ]
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "vendor_name": "n/a",
                    "product": {
                        "product_data": [
                            {
                                "product_name": "glibc",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_affected": "=",
                                            "version_value": "Fixed in glibc v2.31 and above."
                                        }
                                    ]
                                }
                            }
                        ]
                    }
                }
            ]
        }
    },
    "references": {
        "reference_data": [
            {
                "url": "https://www.openwall.com/lists/oss-security/2022/01/24/4",
                "refsource": "MISC",
                "name": "https://www.openwall.com/lists/oss-security/2022/01/24/4"
            },
            {
                "url": "https://sourceware.org/bugzilla/show_bug.cgi?id=28769",
                "refsource": "MISC",
                "name": "https://sourceware.org/bugzilla/show_bug.cgi?id=28769"
            },
            {
                "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2024637",
                "refsource": "MISC",
                "name": "https://bugzilla.redhat.com/show_bug.cgi?id=2024637"
            },
            {
                "url": "https://access.redhat.com/security/cve/CVE-2021-3999",
                "refsource": "MISC",
                "name": "https://access.redhat.com/security/cve/CVE-2021-3999"
            },
            {
                "url": "https://security-tracker.debian.org/tracker/CVE-2021-3999",
                "refsource": "MISC",
                "name": "https://security-tracker.debian.org/tracker/CVE-2021-3999"
            },
            {
                "url": "https://lists.debian.org/debian-lts-announce/2022/10/msg00021.html",
                "refsource": "MISC",
                "name": "https://lists.debian.org/debian-lts-announce/2022/10/msg00021.html"
            },
            {
                "url": "https://security.netapp.com/advisory/ntap-20221104-0001/",
                "refsource": "MISC",
                "name": "https://security.netapp.com/advisory/ntap-20221104-0001/"
            },
            {
                "url": "https://sourceware.org/git/gitweb.cgi?p=glibc.git%3Bh=23e0e8f5f1fb5ed150253d986ecccdc90c2dcd5e",
                "refsource": "MISC",
                "name": "https://sourceware.org/git/gitweb.cgi?p=glibc.git%3Bh=23e0e8f5f1fb5ed150253d986ecccdc90c2dcd5e"
            }
        ]
    }
}