ubuntu-cve-2020-21913
Vulnerability from osv_ubuntu
Published
2021-09-20 14:15
Modified
2026-04-22 07:39
Summary
Details

International Components for Unicode (ICU-20850) v66.1 was discovered to contain a use after free bug in the pkg_createWithAssemblyCode function in the file tools/pkgdata/pkgdata.cpp.

Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
N/A (UNKNOWN)
low
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "icu-devtools",
            "binary_version": "52.1-3ubuntu0.8+esm2"
          },
          {
            "binary_name": "libicu52",
            "binary_version": "52.1-3ubuntu0.8+esm2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:14.04:LTS",
        "name": "icu",
        "purl": "pkg:deb/ubuntu/icu@52.1-3ubuntu0.8+esm2?arch=source\u0026distro=trusty/esm"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "52.1-3ubuntu0.8+esm2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.8.1.1-12ubuntu2",
        "4.8.1.1-13+nmu1",
        "4.8.1.1-13+nmu1ubuntu1",
        "52.1-3",
        "52.1-3ubuntu0.2",
        "52.1-3ubuntu0.3",
        "52.1-3ubuntu0.4",
        "52.1-3ubuntu0.5",
        "52.1-3ubuntu0.6",
        "52.1-3ubuntu0.7",
        "52.1-3ubuntu0.8",
        "52.1-3ubuntu0.8+esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "icu-devtools",
            "binary_version": "55.1-7ubuntu0.5+esm1"
          },
          {
            "binary_name": "libicu55",
            "binary_version": "55.1-7ubuntu0.5+esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "icu",
        "purl": "pkg:deb/ubuntu/icu@55.1-7ubuntu0.5+esm1?arch=source\u0026distro=esm-infra/xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "55.1-7ubuntu0.5+esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "55.1-4ubuntu1",
        "55.1-6ubuntu1",
        "55.1-7",
        "55.1-7ubuntu0.1",
        "55.1-7ubuntu0.2",
        "55.1-7ubuntu0.3",
        "55.1-7ubuntu0.4",
        "55.1-7ubuntu0.5"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "icu-devtools",
            "binary_version": "60.2-3ubuntu3.2"
          },
          {
            "binary_name": "libicu60",
            "binary_version": "60.2-3ubuntu3.2"
          },
          {
            "binary_name": "libiculx60",
            "binary_version": "60.2-3ubuntu3.2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "icu",
        "purl": "pkg:deb/ubuntu/icu@60.2-3ubuntu3.2?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "60.2-3ubuntu3.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "57.1-6",
        "59.1-3ubuntu1",
        "60.1-1ubuntu2",
        "60.2-1ubuntu1",
        "60.2-3ubuntu1",
        "60.2-3ubuntu3",
        "60.2-3ubuntu3.1"
      ]
    }
  ],
  "aliases": [],
  "details": "International Components for Unicode (ICU-20850) v66.1 was discovered to contain a use after free bug in the pkg_createWithAssemblyCode function in the file tools/pkgdata/pkgdata.cpp.",
  "id": "UBUNTU-CVE-2020-21913",
  "modified": "2026-04-22T07:39:30Z",
  "published": "2021-09-20T14:15:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-21913"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/unicode-org/icu/pull/886"
    },
    {
      "type": "REPORT",
      "url": "https://unicode-org.atlassian.net/browse/ICU-20850"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-5133-1"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2020-21913"
    }
  ],
  "related": [
    "USN-5133-1"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "low",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2020-21913"
  ]
}



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