cnvd - cnvd-2016-01709

cnvd-2016-01709

Vulnerability from cnvd

Title: Debian jessie glibc权限获取漏洞

Description:

Debian是Debian Project合作组织创建的以Linux或FreeBSD为内核的自由操作系统。该操作系统所使用的基础工具大部分来源于GNU。jessie是Debian其中的一个分支版本。glibc（又名GNU C Library，libc6）package是其中的一个按照LGPL许可协议发布的开源免费的C语言编译程序包。

Debian jessie上的glibc 2.19-18+deb8u4之前版本中的pt_chown中存在安全漏洞，该漏洞源于程序未能执行与文件描述符传递相关的命名空间检查。本地攻击者可借助pts读取和写入操作利用该漏洞捕获键盘输入，伪造数据，获取权限。

Severity: 高

Patch Name: Debian jessie glibc权限获取漏洞的补丁

Patch Description:

Debian jessie上的glibc 2.19-18+deb8u4之前版本中的pt_chown中存在安全漏洞，该漏洞源于程序未能执行与文件描述符传递相关的命名空间检查。本地攻击者可借助pts读取和写入操作利用该漏洞捕获键盘输入，伪造数据，获取权限。目前，供应商发布了安全公告及相关补丁信息，修复了此漏洞。

Formal description:

目前厂商已经发布了升级补丁以修复此安全问题，补丁获取链接： http://anonscm.debian.org/cgit/pkg-glibc/glibc.git/commit/?h=jessie&id=11475c083282c1582c4dd72eecfcb2b7d308c958

Reference: http://www.openwall.com/lists/oss-security/2016/02/23/3 http://www.halfdog.net/Security/2015/PtChownArbitraryPtsAccessViaUserNamespace/

Impacted products

Name
Debian glibc package <2.19-18+deb8u4

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2016-2856"
    }
  },
  "description": "Debian\u662fDebian Project\u5408\u4f5c\u7ec4\u7ec7\u521b\u5efa\u7684\u4ee5Linux\u6216FreeBSD\u4e3a\u5185\u6838\u7684\u81ea\u7531\u64cd\u4f5c\u7cfb\u7edf\u3002\u8be5\u64cd\u4f5c\u7cfb\u7edf\u6240\u4f7f\u7528\u7684\u57fa\u7840\u5de5\u5177\u5927\u90e8\u5206\u6765\u6e90\u4e8eGNU\u3002jessie\u662fDebian\u5176\u4e2d\u7684\u4e00\u4e2a\u5206\u652f\u7248\u672c\u3002glibc\uff08\u53c8\u540dGNU C Library\uff0clibc6\uff09package\u662f\u5176\u4e2d\u7684\u4e00\u4e2a\u6309\u7167LGPL\u8bb8\u53ef\u534f\u8bae\u53d1\u5e03\u7684\u5f00\u6e90\u514d\u8d39\u7684C\u8bed\u8a00\u7f16\u8bd1\u7a0b\u5e8f\u5305\u3002\r\n\r\nDebian jessie\u4e0a\u7684glibc 2.19-18+deb8u4\u4e4b\u524d\u7248\u672c\u4e2d\u7684pt_chown\u4e2d\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7a0b\u5e8f\u672a\u80fd\u6267\u884c\u4e0e\u6587\u4ef6\u63cf\u8ff0\u7b26\u4f20\u9012\u76f8\u5173\u7684\u547d\u540d\u7a7a\u95f4\u68c0\u67e5\u3002\u672c\u5730\u653b\u51fb\u8005\u53ef\u501f\u52a9pts\u8bfb\u53d6\u548c\u5199\u5165\u64cd\u4f5c\u5229\u7528\u8be5\u6f0f\u6d1e\u6355\u83b7\u952e\u76d8\u8f93\u5165\uff0c\u4f2a\u9020\u6570\u636e\uff0c\u83b7\u53d6\u6743\u9650\u3002",
  "discovererName": "Debian",
  "formalWay": "\u76ee\u524d\u5382\u5546\u5df2\u7ecf\u53d1\u5e03\u4e86\u5347\u7ea7\u8865\u4e01\u4ee5\u4fee\u590d\u6b64\u5b89\u5168\u95ee\u9898\uff0c\u8865\u4e01\u83b7\u53d6\u94fe\u63a5\uff1a\r\nhttp://anonscm.debian.org/cgit/pkg-glibc/glibc.git/commit/?h=jessie\u0026id=11475c083282c1582c4dd72eecfcb2b7d308c958",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2016-01709",
  "openTime": "2016-03-17",
  "patchDescription": "Debian\u662fDebian Project\u5408\u4f5c\u7ec4\u7ec7\u521b\u5efa\u7684\u4ee5Linux\u6216FreeBSD\u4e3a\u5185\u6838\u7684\u81ea\u7531\u64cd\u4f5c\u7cfb\u7edf\u3002\u8be5\u64cd\u4f5c\u7cfb\u7edf\u6240\u4f7f\u7528\u7684\u57fa\u7840\u5de5\u5177\u5927\u90e8\u5206\u6765\u6e90\u4e8eGNU\u3002jessie\u662fDebian\u5176\u4e2d\u7684\u4e00\u4e2a\u5206\u652f\u7248\u672c\u3002glibc\uff08\u53c8\u540dGNU C Library\uff0clibc6\uff09package\u662f\u5176\u4e2d\u7684\u4e00\u4e2a\u6309\u7167LGPL\u8bb8\u53ef\u534f\u8bae\u53d1\u5e03\u7684\u5f00\u6e90\u514d\u8d39\u7684C\u8bed\u8a00\u7f16\u8bd1\u7a0b\u5e8f\u5305\u3002\r\n\r\nDebian jessie\u4e0a\u7684glibc 2.19-18+deb8u4\u4e4b\u524d\u7248\u672c\u4e2d\u7684pt_chown\u4e2d\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7a0b\u5e8f\u672a\u80fd\u6267\u884c\u4e0e\u6587\u4ef6\u63cf\u8ff0\u7b26\u4f20\u9012\u76f8\u5173\u7684\u547d\u540d\u7a7a\u95f4\u68c0\u67e5\u3002\u672c\u5730\u653b\u51fb\u8005\u53ef\u501f\u52a9pts\u8bfb\u53d6\u548c\u5199\u5165\u64cd\u4f5c\u5229\u7528\u8be5\u6f0f\u6d1e\u6355\u83b7\u952e\u76d8\u8f93\u5165\uff0c\u4f2a\u9020\u6570\u636e\uff0c\u83b7\u53d6\u6743\u9650\u3002\u76ee\u524d\uff0c\u4f9b\u5e94\u5546\u53d1\u5e03\u4e86\u5b89\u5168\u516c\u544a\u53ca\u76f8\u5173\u8865\u4e01\u4fe1\u606f\uff0c\u4fee\u590d\u4e86\u6b64\u6f0f\u6d1e\u3002",
  "patchName": "Debian jessie glibc\u6743\u9650\u83b7\u53d6\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "Debian glibc package \u003c2.19-18+deb8u4"
  },
  "referenceLink": "http://www.openwall.com/lists/oss-security/2016/02/23/3\r\nhttp://www.halfdog.net/Security/2015/PtChownArbitraryPtsAccessViaUserNamespace/",
  "serverity": "\u9ad8",
  "submitTime": "2016-03-16",
  "title": "Debian jessie glibc\u6743\u9650\u83b7\u53d6\u6f0f\u6d1e"
}

CVE-2016-2856 (GCVE-0-2016-2856)

Vulnerability from cvelistv5

Published

2016-03-14 01:00

Modified

2024-08-05 23:40

Severity ?

CWE

Summary

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.

References

▼	URL	Tags
	http://www.halfdog.net/Security/2015/PtChownArbitraryPtsAccessViaUserNamespace/	x_refsource_MISC
	http://anonscm.debian.org/cgit/pkg-glibc/glibc.git/commit/?h=jessie&id=11475c083282c1582c4dd72eecfcb2b7d308c958	x_refsource_CONFIRM
	http://www.openwall.com/lists/oss-security/2016/03/07/2	mailing-list, x_refsource_MLIST
	http://www.securityfocus.com/bid/84601	vdb-entry, x_refsource_BID
	http://www.ubuntu.com/usn/USN-2985-2	vendor-advisory, x_refsource_UBUNTU
	http://people.canonical.com/~ubuntu-security/cve/2016/CVE-2016-2856.html	x_refsource_CONFIRM
	http://anonscm.debian.org/cgit/pkg-glibc/glibc.git/commit/?h=jessie&id=09f7764882a81e13e7b5d87d715412283a6ce403	x_refsource_CONFIRM
	http://www.openwall.com/lists/oss-security/2016/02/23/3	mailing-list, x_refsource_MLIST
	http://www.ubuntu.com/usn/USN-2985-1	vendor-advisory, x_refsource_UBUNTU

Impacted products

	Vendor	Product	Version
	n/a	n/a	Version: n/a

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-05T23:40:13.594Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "http://www.halfdog.net/Security/2015/PtChownArbitraryPtsAccessViaUserNamespace/"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "http://anonscm.debian.org/cgit/pkg-glibc/glibc.git/commit/?h=jessie\u0026id=11475c083282c1582c4dd72eecfcb2b7d308c958"
          },
          {
            "name": "[oss-security] 20160306 Re: Access to /dev/pts devices via pt_chown and user namespaces",
            "tags": [
              "mailing-list",
              "x_refsource_MLIST",
              "x_transferred"
            ],
            "url": "http://www.openwall.com/lists/oss-security/2016/03/07/2"
          },
          {
            "name": "84601",
            "tags": [
              "vdb-entry",
              "x_refsource_BID",
              "x_transferred"
            ],
            "url": "http://www.securityfocus.com/bid/84601"
          },
          {
            "name": "USN-2985-2",
            "tags": [
              "vendor-advisory",
              "x_refsource_UBUNTU",
              "x_transferred"
            ],
            "url": "http://www.ubuntu.com/usn/USN-2985-2"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "http://people.canonical.com/~ubuntu-security/cve/2016/CVE-2016-2856.html"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "http://anonscm.debian.org/cgit/pkg-glibc/glibc.git/commit/?h=jessie\u0026id=09f7764882a81e13e7b5d87d715412283a6ce403"
          },
          {
            "name": "[oss-security] 20160223 Access to /dev/pts devices via pt_chown and user namespaces",
            "tags": [
              "mailing-list",
              "x_refsource_MLIST",
              "x_transferred"
            ],
            "url": "http://www.openwall.com/lists/oss-security/2016/02/23/3"
          },
          {
            "name": "USN-2985-1",
            "tags": [
              "vendor-advisory",
              "x_refsource_UBUNTU",
              "x_transferred"
            ],
            "url": "http://www.ubuntu.com/usn/USN-2985-1"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "datePublic": "2016-02-23T00:00:00",
      "descriptions": [
        {
          "lang": "en",
          "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."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2016-11-25T19:57:01",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "http://www.halfdog.net/Security/2015/PtChownArbitraryPtsAccessViaUserNamespace/"
        },
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "http://anonscm.debian.org/cgit/pkg-glibc/glibc.git/commit/?h=jessie\u0026id=11475c083282c1582c4dd72eecfcb2b7d308c958"
        },
        {
          "name": "[oss-security] 20160306 Re: Access to /dev/pts devices via pt_chown and user namespaces",
          "tags": [
            "mailing-list",
            "x_refsource_MLIST"
          ],
          "url": "http://www.openwall.com/lists/oss-security/2016/03/07/2"
        },
        {
          "name": "84601",
          "tags": [
            "vdb-entry",
            "x_refsource_BID"
          ],
          "url": "http://www.securityfocus.com/bid/84601"
        },
        {
          "name": "USN-2985-2",
          "tags": [
            "vendor-advisory",
            "x_refsource_UBUNTU"
          ],
          "url": "http://www.ubuntu.com/usn/USN-2985-2"
        },
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "http://people.canonical.com/~ubuntu-security/cve/2016/CVE-2016-2856.html"
        },
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "http://anonscm.debian.org/cgit/pkg-glibc/glibc.git/commit/?h=jessie\u0026id=09f7764882a81e13e7b5d87d715412283a6ce403"
        },
        {
          "name": "[oss-security] 20160223 Access to /dev/pts devices via pt_chown and user namespaces",
          "tags": [
            "mailing-list",
            "x_refsource_MLIST"
          ],
          "url": "http://www.openwall.com/lists/oss-security/2016/02/23/3"
        },
        {
          "name": "USN-2985-1",
          "tags": [
            "vendor-advisory",
            "x_refsource_UBUNTU"
          ],
          "url": "http://www.ubuntu.com/usn/USN-2985-1"
        }
      ],
      "x_legacyV4Record": {
        "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\u0026id=11475c083282c1582c4dd72eecfcb2b7d308c958",
              "refsource": "CONFIRM",
              "url": "http://anonscm.debian.org/cgit/pkg-glibc/glibc.git/commit/?h=jessie\u0026id=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\u0026id=09f7764882a81e13e7b5d87d715412283a6ce403",
              "refsource": "CONFIRM",
              "url": "http://anonscm.debian.org/cgit/pkg-glibc/glibc.git/commit/?h=jessie\u0026id=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"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2016-2856",
    "datePublished": "2016-03-14T01:00:00",
    "dateReserved": "2016-03-06T00:00:00",
    "dateUpdated": "2024-08-05T23:40:13.594Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

Action not permitted