GSD-2013-1956

Vulnerability from gsd - Updated: 2023-12-13 01:22
Details
The create_user_ns function in kernel/user_namespace.c in the Linux kernel before 3.8.6 does not check whether a chroot directory exists that differs from the namespace root directory, which allows local users to bypass intended filesystem restrictions via a crafted clone system call.
Aliases
Aliases
CVE-2013-1956
To clipboard 

{
  "GSD": {
    "alias": "CVE-2013-1956",
    "description": "The create_user_ns function in kernel/user_namespace.c in the Linux kernel before 3.8.6 does not check whether a chroot directory exists that differs from the namespace root directory, which allows local users to bypass intended filesystem restrictions via a crafted clone system call.",
    "id": "GSD-2013-1956",
    "references": [
      "https://www.suse.com/security/cve/CVE-2013-1956.html"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2013-1956"
      ],
      "details": "The create_user_ns function in kernel/user_namespace.c in the Linux kernel before 3.8.6 does not check whether a chroot directory exists that differs from the namespace root directory, which allows local users to bypass intended filesystem restrictions via a crafted clone system call.",
      "id": "GSD-2013-1956",
      "modified": "2023-12-13T01:22:20.765255Z",
      "schema_version": "1.4.0"
    }
  },
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                    "version": {
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                          "version_value": "n/a"
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            "name": "http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.8.6",
            "refsource": "MISC",
            "url": "http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.8.6"
          },
          {
            "name": "http://www.openwall.com/lists/oss-security/2013/04/16/11",
            "refsource": "MISC",
            "url": "http://www.openwall.com/lists/oss-security/2013/04/16/11"
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            "name": "http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=3151527ee007b73a0ebd296010f1c0454a919c7d",
            "refsource": "MISC",
            "url": "http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=3151527ee007b73a0ebd296010f1c0454a919c7d"
          },
          {
            "name": "https://github.com/torvalds/linux/commit/3151527ee007b73a0ebd296010f1c0454a919c7d",
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            "url": "https://github.com/torvalds/linux/commit/3151527ee007b73a0ebd296010f1c0454a919c7d"
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    },
    "nvd.nist.gov": {
      "configurations": {
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        "nodes": [
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                "cpe23Uri": "cpe:2.3:o:linux:linux_kernel:3.8.2:*:*:*:*:*:*:*",
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                "vulnerable": true
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        "description": {
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              "value": "The create_user_ns function in kernel/user_namespace.c in the Linux kernel before 3.8.6 does not check whether a chroot directory exists that differs from the namespace root directory, which allows local users to bypass intended filesystem restrictions via a crafted clone system call."
            }
          ]
        },
        "problemtype": {
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                {
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                  "value": "CWE-264"
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        },
        "references": {
          "reference_data": [
            {
              "name": "http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.8.6",
              "refsource": "CONFIRM",
              "tags": [],
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              "url": "https://github.com/torvalds/linux/commit/3151527ee007b73a0ebd296010f1c0454a919c7d"
            },
            {
              "name": "[oss-security] 20130416 Re: Re: Summary of security bugs (now fixed) in user namespaces",
              "refsource": "MLIST",
              "tags": [],
              "url": "http://www.openwall.com/lists/oss-security/2013/04/16/11"
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              "refsource": "MISC",
              "tags": [],
              "url": "http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=3151527ee007b73a0ebd296010f1c0454a919c7d"
            }
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      },
      "impact": {
        "baseMetricV2": {
          "cvssV2": {
            "accessComplexity": "LOW",
            "accessVector": "LOCAL",
            "authentication": "NONE",
            "availabilityImpact": "NONE",
            "baseScore": 2.1,
            "confidentialityImpact": "NONE",
            "integrityImpact": "PARTIAL",
            "vectorString": "AV:L/AC:L/Au:N/C:N/I:P/A:N",
            "version": "2.0"
          },
          "exploitabilityScore": 3.9,
          "impactScore": 2.9,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "LOW",
          "userInteractionRequired": false
        }
      },
      "lastModifiedDate": "2023-02-13T00:28Z",
      "publishedDate": "2013-04-24T19:55Z"
    }
  }
}



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