ubuntu-cve-2021-23437
Vulnerability from osv_ubuntu
Published
2021-09-03 16:15
Modified
2025-09-08 16:46
Summary
Details

The package pillow 5.2.0 and before 8.3.2 are vulnerable to Regular Expression Denial of Service (ReDoS) via the getrgb function.


{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "python-imaging",
            "binary_version": "2.3.0-1ubuntu3.4+esm3"
          },
          {
            "binary_name": "python-imaging-compat",
            "binary_version": "2.3.0-1ubuntu3.4+esm3"
          },
          {
            "binary_name": "python-imaging-sane",
            "binary_version": "2.3.0-1ubuntu3.4+esm3"
          },
          {
            "binary_name": "python-imaging-tk",
            "binary_version": "2.3.0-1ubuntu3.4+esm3"
          },
          {
            "binary_name": "python-pil",
            "binary_version": "2.3.0-1ubuntu3.4+esm3"
          },
          {
            "binary_name": "python-pil.imagetk",
            "binary_version": "2.3.0-1ubuntu3.4+esm3"
          },
          {
            "binary_name": "python-sane",
            "binary_version": "2.3.0-1ubuntu3.4+esm3"
          },
          {
            "binary_name": "python3-imaging",
            "binary_version": "2.3.0-1ubuntu3.4+esm3"
          },
          {
            "binary_name": "python3-imaging-sane",
            "binary_version": "2.3.0-1ubuntu3.4+esm3"
          },
          {
            "binary_name": "python3-imaging-tk",
            "binary_version": "2.3.0-1ubuntu3.4+esm3"
          },
          {
            "binary_name": "python3-pil",
            "binary_version": "2.3.0-1ubuntu3.4+esm3"
          },
          {
            "binary_name": "python3-pil.imagetk",
            "binary_version": "2.3.0-1ubuntu3.4+esm3"
          },
          {
            "binary_name": "python3-sane",
            "binary_version": "2.3.0-1ubuntu3.4+esm3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:14.04:LTS",
        "name": "pillow",
        "purl": "pkg:deb/ubuntu/pillow@2.3.0-1ubuntu3.4+esm3?arch=source\u0026distro=trusty/esm"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.3.0-1ubuntu3.4+esm3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.2.1-1ubuntu2",
        "2.2.1-2ubuntu1",
        "2.2.1-3ubuntu2",
        "2.2.1-3ubuntu3",
        "2.2.1-3ubuntu4",
        "2.2.1-3ubuntu6",
        "2.3.0-1ubuntu1",
        "2.3.0-1ubuntu2",
        "2.3.0-1ubuntu3",
        "2.3.0-1ubuntu3.2",
        "2.3.0-1ubuntu3.3",
        "2.3.0-1ubuntu3.4",
        "2.3.0-1ubuntu3.4+esm1",
        "2.3.0-1ubuntu3.4+esm2"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "python-imaging",
            "binary_version": "3.1.2-0ubuntu1.6+esm1"
          },
          {
            "binary_name": "python-pil",
            "binary_version": "3.1.2-0ubuntu1.6+esm1"
          },
          {
            "binary_name": "python-pil.imagetk",
            "binary_version": "3.1.2-0ubuntu1.6+esm1"
          },
          {
            "binary_name": "python3-pil",
            "binary_version": "3.1.2-0ubuntu1.6+esm1"
          },
          {
            "binary_name": "python3-pil.imagetk",
            "binary_version": "3.1.2-0ubuntu1.6+esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "pillow",
        "purl": "pkg:deb/ubuntu/pillow@3.1.2-0ubuntu1.6+esm1?arch=source\u0026distro=esm-infra/xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.1.2-0ubuntu1.6+esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.9.0-1",
        "3.0.0-1",
        "3.0.0-1build1",
        "3.1.0-1",
        "3.1.1-1",
        "3.1.2-0ubuntu1",
        "3.1.2-0ubuntu1.1",
        "3.1.2-0ubuntu1.3",
        "3.1.2-0ubuntu1.4",
        "3.1.2-0ubuntu1.5",
        "3.1.2-0ubuntu1.6"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "python-pil",
            "binary_version": "5.1.0-1ubuntu0.7"
          },
          {
            "binary_name": "python-pil.imagetk",
            "binary_version": "5.1.0-1ubuntu0.7"
          },
          {
            "binary_name": "python3-pil",
            "binary_version": "5.1.0-1ubuntu0.7"
          },
          {
            "binary_name": "python3-pil.imagetk",
            "binary_version": "5.1.0-1ubuntu0.7"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "pillow",
        "purl": "pkg:deb/ubuntu/pillow@5.1.0-1ubuntu0.7?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5.1.0-1ubuntu0.7"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.1.1-3build2",
        "4.3.0-2ubuntu1",
        "5.0.0-1",
        "5.1.0-1",
        "5.1.0-1ubuntu0.2",
        "5.1.0-1ubuntu0.3",
        "5.1.0-1ubuntu0.4",
        "5.1.0-1ubuntu0.5",
        "5.1.0-1ubuntu0.6"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "python3-pil",
            "binary_version": "7.0.0-4ubuntu0.5"
          },
          {
            "binary_name": "python3-pil.imagetk",
            "binary_version": "7.0.0-4ubuntu0.5"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "pillow",
        "purl": "pkg:deb/ubuntu/pillow@7.0.0-4ubuntu0.5?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "7.0.0-4ubuntu0.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "6.1.0-1",
        "6.1.0-1build1",
        "6.2.1-2",
        "7.0.0-4",
        "7.0.0-4build1",
        "7.0.0-4ubuntu0.1",
        "7.0.0-4ubuntu0.2",
        "7.0.0-4ubuntu0.3",
        "7.0.0-4ubuntu0.4"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "python-pil",
            "binary_version": "6.2.1-3ubuntu0.1~esm2"
          },
          {
            "binary_name": "python-pil.imagetk",
            "binary_version": "6.2.1-3ubuntu0.1~esm2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:20.04:LTS",
        "name": "pillow-python2",
        "purl": "pkg:deb/ubuntu/pillow-python2@6.2.1-3ubuntu0.1~esm2?arch=source\u0026distro=esm-apps/focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "6.2.1-3~build1",
        "6.2.1-3",
        "6.2.1-3ubuntu0.1~esm1",
        "6.2.1-3ubuntu0.1~esm2"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "python3-pil",
            "binary_version": "9.0.0-1"
          },
          {
            "binary_name": "python3-pil.imagetk",
            "binary_version": "9.0.0-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "pillow",
        "purl": "pkg:deb/ubuntu/pillow@9.0.0-1?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "9.0.0-1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "8.1.2+dfsg-0.3"
      ]
    }
  ],
  "aliases": [],
  "details": "The package pillow 5.2.0 and before 8.3.2 are vulnerable to Regular Expression Denial of Service (ReDoS) via the getrgb function.",
  "id": "UBUNTU-CVE-2021-23437",
  "modified": "2025-09-08T16:46:59Z",
  "published": "2021-09-03T16:15:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-23437"
    },
    {
      "type": "REPORT",
      "url": "https://snyk.io/vuln/SNYK-PYTHON-PILLOW-1319443"
    },
    {
      "type": "REPORT",
      "url": "https://pillow.readthedocs.io/en/stable/releasenotes/8.3.2.html"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-5227-1"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-5227-2"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-23437"
    }
  ],
  "related": [
    "USN-5227-1",
    "USN-5227-2"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "low",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2021-23437"
  ]
}



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