ubuntu-cve-2016-5300
Vulnerability from osv_ubuntu
Published
2016-06-06 00:00
Modified
2026-05-27 10:00
Summary
Details

The XML parser in Expat does not use sufficient entropy for hash initialization, which allows context-dependent attackers to cause a denial of service (CPU consumption) via crafted identifiers in an XML document. NOTE: this vulnerability exists because of an incomplete fix for CVE-2012-0876.


{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "expat",
            "binary_version": "2.1.0-4ubuntu1.3"
          },
          {
            "binary_name": "lib64expat1",
            "binary_version": "2.1.0-4ubuntu1.3"
          },
          {
            "binary_name": "libexpat1",
            "binary_version": "2.1.0-4ubuntu1.3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:14.04:LTS",
        "name": "expat",
        "purl": "pkg:deb/ubuntu/expat@2.1.0-4ubuntu1.3?arch=source\u0026distro=trusty"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.1.0-4ubuntu1.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.1.0-4",
        "2.1.0-4ubuntu1",
        "2.1.0-4ubuntu1.1",
        "2.1.0-4ubuntu1.2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "vnc4server",
            "binary_version": "4.1.1+xorg4.3.0-37ubuntu5.0.2+esm1"
          },
          {
            "binary_name": "xvnc4viewer",
            "binary_version": "4.1.1+xorg4.3.0-37ubuntu5.0.2+esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:14.04:LTS",
        "name": "vnc4",
        "purl": "pkg:deb/ubuntu/vnc4@4.1.1+xorg4.3.0-37ubuntu5.0.2+esm1?arch=source\u0026distro=esm-infra-legacy/trusty"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.1.1+xorg4.3.0-37ubuntu5",
        "4.1.1+xorg4.3.0-37ubuntu5.0.1",
        "4.1.1+xorg4.3.0-37ubuntu5.0.2",
        "4.1.1+xorg4.3.0-37ubuntu5.0.2+esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libxmlrpc-c++8",
            "binary_version": "1.33.06-0ubuntu1+esm1"
          },
          {
            "binary_name": "libxmlrpc-core-c3",
            "binary_version": "1.33.06-0ubuntu1+esm1"
          },
          {
            "binary_name": "xmlrpc-api-utils",
            "binary_version": "1.33.06-0ubuntu1+esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:14.04:LTS",
        "name": "xmlrpc-c",
        "purl": "pkg:deb/ubuntu/xmlrpc-c@1.33.06-0ubuntu1+esm1?arch=source\u0026distro=esm-infra-legacy/trusty"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.16.33-3.2ubuntu3",
        "1.33.06-0ubuntu1",
        "1.33.06-0ubuntu1+esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "expat",
            "binary_version": "2.1.0-7ubuntu0.16.04.2"
          },
          {
            "binary_name": "lib64expat1",
            "binary_version": "2.1.0-7ubuntu0.16.04.2"
          },
          {
            "binary_name": "libexpat1",
            "binary_version": "2.1.0-7ubuntu0.16.04.2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "expat",
        "purl": "pkg:deb/ubuntu/expat@2.1.0-7ubuntu0.16.04.2?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.1.0-7ubuntu0.16.04.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.1.0-7",
        "2.1.0-7ubuntu0.16.04.1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "vnc4server",
            "binary_version": "4.1.1+xorg4.3.0-37.3ubuntu2.1+esm1"
          },
          {
            "binary_name": "xvnc4viewer",
            "binary_version": "4.1.1+xorg4.3.0-37.3ubuntu2.1+esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "vnc4",
        "purl": "pkg:deb/ubuntu/vnc4@4.1.1+xorg4.3.0-37.3ubuntu2.1+esm1?arch=source\u0026distro=esm-apps/xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.1.1+xorg4.3.0-37.3ubuntu2",
        "4.1.1+xorg4.3.0-37.3ubuntu2.1+esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libxmlrpc-c++8v5",
            "binary_version": "1.33.14-1ubuntu1+esm1"
          },
          {
            "binary_name": "libxmlrpc-core-c3",
            "binary_version": "1.33.14-1ubuntu1+esm1"
          },
          {
            "binary_name": "xmlrpc-api-utils",
            "binary_version": "1.33.14-1ubuntu1+esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "xmlrpc-c",
        "purl": "pkg:deb/ubuntu/xmlrpc-c@1.33.14-1ubuntu1+esm1?arch=source\u0026distro=esm-apps-legacy/xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.33.14-0.2ubuntu3",
        "1.33.14-1ubuntu1",
        "1.33.14-1ubuntu1+esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "vnc4server",
            "binary_version": "4.1.1+xorg4.3.0-37.3ubuntu2"
          },
          {
            "binary_name": "xvnc4viewer",
            "binary_version": "4.1.1+xorg4.3.0-37.3ubuntu2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "vnc4",
        "purl": "pkg:deb/ubuntu/vnc4@4.1.1+xorg4.3.0-37.3ubuntu2?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.1.1+xorg4.3.0-37.3ubuntu2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libxmlrpc-c++8v5",
            "binary_version": "1.33.14-8ubuntu0.18.04.1~esm1"
          },
          {
            "binary_name": "libxmlrpc-core-c3",
            "binary_version": "1.33.14-8ubuntu0.18.04.1~esm1"
          },
          {
            "binary_name": "xmlrpc-api-utils",
            "binary_version": "1.33.14-8ubuntu0.18.04.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:18.04:LTS",
        "name": "xmlrpc-c",
        "purl": "pkg:deb/ubuntu/xmlrpc-c@1.33.14-8ubuntu0.18.04.1~esm1?arch=source\u0026distro=esm-apps/bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.33.14-7",
        "1.33.14-8",
        "1.33.14-8build1",
        "1.33.14-8ubuntu0.18.04.1~esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libxmlrpc-c++8v5",
            "binary_version": "1.33.14-8ubuntu0.20.04.1~esm1"
          },
          {
            "binary_name": "libxmlrpc-core-c3",
            "binary_version": "1.33.14-8ubuntu0.20.04.1~esm1"
          },
          {
            "binary_name": "xmlrpc-api-utils",
            "binary_version": "1.33.14-8ubuntu0.20.04.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:20.04:LTS",
        "name": "xmlrpc-c",
        "purl": "pkg:deb/ubuntu/xmlrpc-c@1.33.14-8ubuntu0.20.04.1~esm1?arch=source\u0026distro=esm-apps/focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.33.14-8build1",
        "1.33.14-8build2",
        "1.33.14-8ubuntu0.20.04.1~esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libxmlrpc-c++8v5",
            "binary_version": "1.33.14-10ubuntu0.1~esm1"
          },
          {
            "binary_name": "libxmlrpc-core-c3",
            "binary_version": "1.33.14-10ubuntu0.1~esm1"
          },
          {
            "binary_name": "xmlrpc-api-utils",
            "binary_version": "1.33.14-10ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:22.04:LTS",
        "name": "xmlrpc-c",
        "purl": "pkg:deb/ubuntu/xmlrpc-c@1.33.14-10ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.33.14-9",
        "1.33.14-10",
        "1.33.14-10ubuntu0.1~esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libxmlrpc-c++8t64",
            "binary_version": "1.33.14-12ubuntu0.1~esm1"
          },
          {
            "binary_name": "libxmlrpc-core-c3t64",
            "binary_version": "1.33.14-12ubuntu0.1~esm1"
          },
          {
            "binary_name": "xmlrpc-api-utils",
            "binary_version": "1.33.14-12ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:24.04:LTS",
        "name": "xmlrpc-c",
        "purl": "pkg:deb/ubuntu/xmlrpc-c@1.33.14-12ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.33.14-11",
        "1.33.14-11.1",
        "1.33.14-12",
        "1.33.14-12build1",
        "1.33.14-12build2",
        "1.33.14-12ubuntu0.1~esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "sitecopy",
            "binary_version": "1:0.16.6-16build1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:25.10",
        "name": "sitecopy",
        "purl": "pkg:deb/ubuntu/sitecopy@1:0.16.6-16build1?arch=source\u0026distro=questing"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1:0.16.6-16",
        "1:0.16.6-16build1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libxmlrpc-c++9",
            "binary_version": "1.59.03-10.1"
          },
          {
            "binary_name": "libxmlrpc-core-c3t64",
            "binary_version": "1.59.03-10.1"
          },
          {
            "binary_name": "libxmlrpc-util4",
            "binary_version": "1.59.03-10.1"
          },
          {
            "binary_name": "xmlrpc-api-utils",
            "binary_version": "1.59.03-10.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:25.10",
        "name": "xmlrpc-c",
        "purl": "pkg:deb/ubuntu/xmlrpc-c@1.59.03-10.1?arch=source\u0026distro=questing"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.59.03-7",
        "1.59.03-9",
        "1.59.03-10",
        "1.59.03-10.1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "sitecopy",
            "binary_version": "1:0.16.6-16build1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "sitecopy",
        "purl": "pkg:deb/ubuntu/sitecopy@1:0.16.6-16build1?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1:0.16.6-16build1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libxmlrpc-c++9",
            "binary_version": "1.60.05-1"
          },
          {
            "binary_name": "libxmlrpc-core-c3t64",
            "binary_version": "1.60.05-1"
          },
          {
            "binary_name": "libxmlrpc-util4",
            "binary_version": "1.60.05-1"
          },
          {
            "binary_name": "xmlrpc-api-utils",
            "binary_version": "1.60.05-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "xmlrpc-c",
        "purl": "pkg:deb/ubuntu/xmlrpc-c@1.60.05-1?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.59.03-10.1",
        "1.60.05-1"
      ]
    }
  ],
  "aliases": [],
  "details": "The XML parser in Expat does not use sufficient entropy for hash initialization, which allows context-dependent attackers to cause a denial of service (CPU consumption) via crafted identifiers in an XML document. NOTE: this vulnerability exists because of an incomplete fix for CVE-2012-0876.",
  "id": "UBUNTU-CVE-2016-5300",
  "modified": "2026-05-27T10:00:41Z",
  "published": "2016-06-06T00:00:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2016-5300"
    },
    {
      "type": "REPORT",
      "url": "http://seclists.org/oss-sec/2016/q2/468"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-3013-1"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-3010-1"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2016-5300"
    }
  ],
  "related": [
    "USN-3013-1",
    "USN-3010-1"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2016-5300"
  ]
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

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