ubuntu-cve-2018-6345
Vulnerability from osv_ubuntu
Published
2019-01-15 22:29
Modified
2026-04-22 07:38
Summary
Details

The function number_format is vulnerable to a heap overflow issue when its second argument ($dec_points) is excessively large. The internal implementation of the function will cause a string to be created with an invalid length, which can then interact poorly with other functions. This affects all supported versions of HHVM (3.30.1 and 3.27.5 and below).

Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
N/A (UNKNOWN)
medium
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "hhvm",
            "binary_version": "3.11.1+dfsg-1ubuntu1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "hhvm",
        "purl": "pkg:deb/ubuntu/hhvm@3.11.1+dfsg-1ubuntu1?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.11.0+dfsg-1",
        "3.11.1+dfsg-1",
        "3.11.1+dfsg-1ubuntu1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "hhvm",
            "binary_version": "3.21.0+dfsg-2ubuntu2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "hhvm",
        "purl": "pkg:deb/ubuntu/hhvm@3.21.0+dfsg-2ubuntu2?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.21.0+dfsg-2",
        "3.21.0+dfsg-2build1",
        "3.21.0+dfsg-2build2",
        "3.21.0+dfsg-2build3",
        "3.21.0+dfsg-2ubuntu2"
      ]
    }
  ],
  "aliases": [],
  "details": "The function number_format is vulnerable to a heap overflow issue when its second argument ($dec_points) is excessively large. The internal implementation of the function will cause a string to be created with an invalid length, which can then interact poorly with other functions. This affects all supported versions of HHVM (3.30.1 and 3.27.5 and below).",
  "id": "UBUNTU-CVE-2018-6345",
  "modified": "2026-04-22T07:38:33Z",
  "published": "2019-01-15T22:29:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2018-6345"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/facebook/hhvm/commit/190ffdf6c8b1ec443be202c7d69e63a7e3da25e3"
    },
    {
      "type": "REPORT",
      "url": "https://hhvm.com/blog/2019/01/14/hhvm-3.30.2.html"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2018-6345"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2018-6345"
  ]
}



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