cvelist/2018/18xxx/CVE-2018-18955.json

{
    "CVE_data_meta": {
        "ASSIGNER": "cve@mitre.org",
        "ID": "CVE-2018-18955",
        "STATE": "PUBLIC"
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "product": {
                        "product_data": [
                            {
                                "product_name": "n/a",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_value": "n/a"
                                        }
                                    ]
                                }
                            }
                        ]
                    },
                    "vendor_name": "n/a"
                }
            ]
        }
    },
    "data_format": "MITRE",
    "data_type": "CVE",
    "data_version": "4.0",
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "In the Linux kernel 4.15.x through 4.19.x before 4.19.2, map_write() in kernel/user_namespace.c allows privilege escalation because it mishandles nested user namespaces with more than 5 UID or GID ranges. A user who has CAP_SYS_ADMIN in an affected user namespace can bypass access controls on resources outside the namespace, as demonstrated by reading /etc/shadow. This occurs because an ID transformation takes place properly for the namespaced-to-kernel direction but not for the kernel-to-namespaced direction."
            }
        ]
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "n/a"
                    }
                ]
            }
        ]
    },
    "references": {
        "reference_data": [
            {
                "name": "https://github.com/torvalds/linux/commit/d2f007dbe7e4c9583eea6eb04d60001e85c6f1bd",
                "refsource": "MISC",
                "url": "https://github.com/torvalds/linux/commit/d2f007dbe7e4c9583eea6eb04d60001e85c6f1bd"
            },
            {
                "name": "https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.18.19",
                "refsource": "MISC",
                "url": "https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.18.19"
            },
            {
                "name": "USN-3836-2",
                "refsource": "UBUNTU",
                "url": "https://usn.ubuntu.com/3836-2/"
            },
            {
                "name": "USN-3835-1",
                "refsource": "UBUNTU",
                "url": "https://usn.ubuntu.com/3835-1/"
            },
            {
                "name": "https://bugs.chromium.org/p/project-zero/issues/detail?id=1712",
                "refsource": "MISC",
                "url": "https://bugs.chromium.org/p/project-zero/issues/detail?id=1712"
            },
            {
                "name": "http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=d2f007dbe7e4c9583eea6eb04d60001e85c6f1bd",
                "refsource": "MISC",
                "url": "http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=d2f007dbe7e4c9583eea6eb04d60001e85c6f1bd"
            },
            {
                "name": "USN-3833-1",
                "refsource": "UBUNTU",
                "url": "https://usn.ubuntu.com/3833-1/"
            },
            {
                "name": "USN-3832-1",
                "refsource": "UBUNTU",
                "url": "https://usn.ubuntu.com/3832-1/"
            },
            {
                "name": "45915",
                "refsource": "EXPLOIT-DB",
                "url": "https://www.exploit-db.com/exploits/45915/"
            },
            {
                "name": "https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.2",
                "refsource": "MISC",
                "url": "https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.2"
            },
            {
                "name": "45886",
                "refsource": "EXPLOIT-DB",
                "url": "https://www.exploit-db.com/exploits/45886/"
            },
            {
                "name": "USN-3836-1",
                "refsource": "UBUNTU",
                "url": "https://usn.ubuntu.com/3836-1/"
            },
            {
                "name": "105941",
                "refsource": "BID",
                "url": "http://www.securityfocus.com/bid/105941"
            },
            {
                "refsource": "CONFIRM",
                "name": "https://support.f5.com/csp/article/K39103040",
                "url": "https://support.f5.com/csp/article/K39103040"
            },
            {
                "refsource": "CONFIRM",
                "name": "https://security.netapp.com/advisory/ntap-20190416-0003/",
                "url": "https://security.netapp.com/advisory/ntap-20190416-0003/"
            }
        ]
    }
}