{
    "CVE_data_meta": {
        "ASSIGNER": "cve@mitre.org",
        "ID": "CVE-2016-2856",
        "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": "pt_chown in the glibc package before 2.19-18+deb8u4 on Debian jessie; the elibc package before 2.15-0ubuntu10.14 on Ubuntu 12.04 LTS and before 2.19-0ubuntu6.8 on Ubuntu 14.04 LTS; and the glibc package before 2.21-0ubuntu4.2 on Ubuntu 15.10 and before 2.23-0ubuntu1 on Ubuntu 16.04 LTS and 16.10 lacks a namespace check associated with file-descriptor passing, which allows local users to capture keystrokes and spoof data, and possibly gain privileges, via pts read and write operations, related to debian/sysdeps/linux.mk.  NOTE: this is not considered a vulnerability in the upstream GNU C Library because the upstream documentation has a clear security recommendation against the --enable-pt_chown option."
            }
        ]
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "n/a"
                    }
                ]
            }
        ]
    },
    "references": {
        "reference_data": [
            {
                "name": "http://www.halfdog.net/Security/2015/PtChownArbitraryPtsAccessViaUserNamespace/",
                "refsource": "MISC",
                "url": "http://www.halfdog.net/Security/2015/PtChownArbitraryPtsAccessViaUserNamespace/"
            },
            {
                "name": "http://anonscm.debian.org/cgit/pkg-glibc/glibc.git/commit/?h=jessie&id=11475c083282c1582c4dd72eecfcb2b7d308c958",
                "refsource": "CONFIRM",
                "url": "http://anonscm.debian.org/cgit/pkg-glibc/glibc.git/commit/?h=jessie&id=11475c083282c1582c4dd72eecfcb2b7d308c958"
            },
            {
                "name": "[oss-security] 20160306 Re: Access to /dev/pts devices via pt_chown and user namespaces",
                "refsource": "MLIST",
                "url": "http://www.openwall.com/lists/oss-security/2016/03/07/2"
            },
            {
                "name": "84601",
                "refsource": "BID",
                "url": "http://www.securityfocus.com/bid/84601"
            },
            {
                "name": "USN-2985-2",
                "refsource": "UBUNTU",
                "url": "http://www.ubuntu.com/usn/USN-2985-2"
            },
            {
                "name": "http://people.canonical.com/~ubuntu-security/cve/2016/CVE-2016-2856.html",
                "refsource": "CONFIRM",
                "url": "http://people.canonical.com/~ubuntu-security/cve/2016/CVE-2016-2856.html"
            },
            {
                "name": "http://anonscm.debian.org/cgit/pkg-glibc/glibc.git/commit/?h=jessie&id=09f7764882a81e13e7b5d87d715412283a6ce403",
                "refsource": "CONFIRM",
                "url": "http://anonscm.debian.org/cgit/pkg-glibc/glibc.git/commit/?h=jessie&id=09f7764882a81e13e7b5d87d715412283a6ce403"
            },
            {
                "name": "[oss-security] 20160223 Access to /dev/pts devices via pt_chown and user namespaces",
                "refsource": "MLIST",
                "url": "http://www.openwall.com/lists/oss-security/2016/02/23/3"
            },
            {
                "name": "USN-2985-1",
                "refsource": "UBUNTU",
                "url": "http://www.ubuntu.com/usn/USN-2985-1"
            }
        ]
    }
}