Vulnerability-Lookup

ubuntu-cve-2023-45139

Vulnerability from osv_ubuntu

Published

2024-01-10 16:15

Modified

2026-04-28 15:42

Summary

Details

fontTools is a library for manipulating fonts, written in Python. The subsetting module has a XML External Entity Injection (XXE) vulnerability which allows an attacker to resolve arbitrary entities when a candidate font (OT-SVG fonts), which contains a SVG table, is parsed. This allows attackers to include arbitrary files from the filesystem fontTools is running on or make web requests from the host system. This vulnerability has been patched in version 4.43.0.

Severity

7.5 (High)


                    
                      CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

7.5 (High)


                    
                      CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2023-45139	REPORT
	https://github.com/fonttools/fonttools/security/a…	REPORT
	https://github.com/fonttools/fonttools/commit/9f6…	REPORT
	https://github.com/fonttools/fonttools/releases/t…	REPORT
	https://www.cve.org/CVERecord?id=CVE-2023-45139	REPORT
	https://ubuntu.com/security/notices/USN-7917-1	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "fonttools",
            "binary_version": "4.29.1-2ubuntu0.1~esm1"
          },
          {
            "binary_name": "python3-fonttools",
            "binary_version": "4.29.1-2ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:22.04:LTS",
        "name": "fonttools",
        "purl": "pkg:deb/ubuntu/fonttools@4.29.1-2ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.29.1-2ubuntu0.1~esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.23.1-1",
        "4.27.1-1",
        "4.28.3-1",
        "4.28.5-1",
        "4.29.1-1",
        "4.29.1-2build1"
      ]
    }
  ],
  "aliases": [],
  "details": "fontTools is a library for manipulating fonts, written in Python. The subsetting module has a XML External Entity Injection (XXE) vulnerability which allows an attacker to resolve arbitrary entities when a candidate font (OT-SVG fonts), which contains a SVG table, is parsed. This allows attackers to include arbitrary files from the filesystem fontTools is running on or make web requests from the host system. This vulnerability has been patched in version 4.43.0.",
  "id": "UBUNTU-CVE-2023-45139",
  "modified": "2026-04-28T15:42:33Z",
  "published": "2024-01-10T16:15:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2023-45139"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/fonttools/fonttools/security/advisories/GHSA-6673-4983-2vx5"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/fonttools/fonttools/commit/9f61271dc1ca82ed91f529b130fe5dc5c9bf1f4c"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/fonttools/fonttools/releases/tag/4.43.0"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2023-45139"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-7917-1"
    }
  ],
  "related": [
    "USN-7917-1"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2023-45139"
  ]
}

CVE-2023-45139 (GCVE-0-2023-45139)

Vulnerability from cvelistv5 – Published: 2024-01-10 16:03 – Updated: 2025-06-03 14:27

Title

fonttools XML External Entity Injection (XXE) Vulnerability

Summary

Severity

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

SSVC

Exploitation: poc Automatable: yes Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-611 - Improper Restriction of XML External Entity Reference

Assigner

GitHub_M

References

6 references

URL	Tags
https://github.com/fonttools/fonttools/security/a…	x_refsource_CONFIRM
https://github.com/fonttools/fonttools/commit/9f6…	x_refsource_MISC
https://github.com/fonttools/fonttools/releases/t…	x_refsource_MISC
https://lists.fedoraproject.org/archives/list/pac…
http://www.openwall.com/lists/oss-security/2024/03/09/1
http://www.openwall.com/lists/oss-security/2024/03/08/2

Impacted products

1 product

Vendor	Product	Version
fonttools	fonttools	Affected: >= 4.28.2, < 4.43.0

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-02T20:14:19.258Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "name": "https://github.com/fonttools/fonttools/security/advisories/GHSA-6673-4983-2vx5",
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://github.com/fonttools/fonttools/security/advisories/GHSA-6673-4983-2vx5"
          },
          {
            "name": "https://github.com/fonttools/fonttools/commit/9f61271dc1ca82ed91f529b130fe5dc5c9bf1f4c",
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/fonttools/fonttools/commit/9f61271dc1ca82ed91f529b130fe5dc5c9bf1f4c"
          },
          {
            "name": "https://github.com/fonttools/fonttools/releases/tag/4.43.0",
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/fonttools/fonttools/releases/tag/4.43.0"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/VY63B4SGY4QOQGUXMECRGD6K3YT3GJ75/"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "http://www.openwall.com/lists/oss-security/2024/03/09/1"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "http://www.openwall.com/lists/oss-security/2024/03/08/2"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2023-45139",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-05-08T18:37:10.491503Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-06-03T14:27:45.728Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "fonttools",
          "vendor": "fonttools",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 4.28.2, \u003c 4.43.0"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "fontTools is a library for manipulating fonts, written in Python. The subsetting module has a XML External Entity Injection (XXE) vulnerability which allows an attacker to resolve arbitrary entities when a candidate font (OT-SVG fonts), which contains a SVG table, is parsed. This allows attackers to include arbitrary files from the filesystem fontTools is running on or make web requests from the host system. This vulnerability has been patched in version 4.43.0."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-611",
              "description": "CWE-611: Improper Restriction of XML External Entity Reference",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-05-01T18:06:54.318Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/fonttools/fonttools/security/advisories/GHSA-6673-4983-2vx5",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/fonttools/fonttools/security/advisories/GHSA-6673-4983-2vx5"
        },
        {
          "name": "https://github.com/fonttools/fonttools/commit/9f61271dc1ca82ed91f529b130fe5dc5c9bf1f4c",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/fonttools/fonttools/commit/9f61271dc1ca82ed91f529b130fe5dc5c9bf1f4c"
        },
        {
          "name": "https://github.com/fonttools/fonttools/releases/tag/4.43.0",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/fonttools/fonttools/releases/tag/4.43.0"
        },
        {
          "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/VY63B4SGY4QOQGUXMECRGD6K3YT3GJ75/"
        },
        {
          "url": "http://www.openwall.com/lists/oss-security/2024/03/09/1"
        },
        {
          "url": "http://www.openwall.com/lists/oss-security/2024/03/08/2"
        }
      ],
      "source": {
        "advisory": "GHSA-6673-4983-2vx5",
        "discovery": "UNKNOWN"
      },
      "title": "fonttools XML External Entity Injection (XXE) Vulnerability"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2023-45139",
    "datePublished": "2024-01-10T16:03:08.770Z",
    "dateReserved": "2023-10-04T16:02:46.329Z",
    "dateUpdated": "2025-06-03T14:27:45.728Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

usn-7917-1

Vulnerability from osv_ubuntu

Published

2025-12-09 17:08

Modified

2026-04-27 14:11

Summary

fonttools vulnerabilities

Details

It was discovered that the subsetting module of fontTools was vulnerable to an XML External Entity (XEE) attack. An unauthenticated remote attacker could possibly use this issue to include arbitrary files from the file system or make web requests from the host system. This issue only affected Ubuntu 22.04 LTS. (CVE-2023-45139)

It was discovered that fontTools was vulnerable to path traversal attacks. If a user or automated system were tricked into extracting a specially crafted .designspace file, an attacker could possibly use this issue to write arbitrary files outside the target directory, resulting in remote code execution. This issue only affected Ubuntu 24.04 LTS, Ubuntu 25.04 and Ubuntu 25.10. (CVE-2025-66034)

References

URL

Type

	https://ubuntu.com/security/notices/USN-7917-1	ADVISORY
	https://ubuntu.com/security/CVE-2023-45139	REPORT
	https://ubuntu.com/security/CVE-2025-66034	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2023-45139",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:Pro:22.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "fonttools",
            "binary_version": "4.29.1-2ubuntu0.1~esm1"
          },
          {
            "binary_name": "python3-fonttools",
            "binary_version": "4.29.1-2ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:22.04:LTS",
        "name": "fonttools",
        "purl": "pkg:deb/ubuntu/fonttools@4.29.1-2ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.29.1-2ubuntu0.1~esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.23.1-1",
        "4.27.1-1",
        "4.28.3-1",
        "4.28.5-1",
        "4.29.1-1",
        "4.29.1-2build1"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2025-66034",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:C/C:N/I:H/A:L",
                  "type": "CVSS_V3"
                },
                {
                  "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"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:Pro:24.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "fonttools",
            "binary_version": "4.46.0-1ubuntu0.1~esm1"
          },
          {
            "binary_name": "python3-fonttools",
            "binary_version": "4.46.0-1ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:24.04:LTS",
        "name": "fonttools",
        "purl": "pkg:deb/ubuntu/fonttools@4.46.0-1ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.46.0-1ubuntu0.1~esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.38.0-1build1",
        "4.38.0-1build2",
        "4.46.0-1",
        "4.46.0-1build2"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2025-66034",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:C/C:N/I:H/A:L",
                  "type": "CVSS_V3"
                },
                {
                  "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"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:25.10"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "fonttools",
            "binary_version": "4.55.3-2ubuntu0.25.10.1"
          },
          {
            "binary_name": "python3-fonttools",
            "binary_version": "4.55.3-2ubuntu0.25.10.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:25.10",
        "name": "fonttools",
        "purl": "pkg:deb/ubuntu/fonttools@4.55.3-2ubuntu0.25.10.1?arch=source\u0026distro=questing"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.55.3-2ubuntu0.25.10.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.55.3-2build1"
      ]
    }
  ],
  "aliases": [],
  "details": "It was discovered that the subsetting module of fontTools was vulnerable to\nan XML External Entity (XEE) attack. An unauthenticated remote attacker\ncould possibly use this issue to include arbitrary files from the file\nsystem or make web requests from the host system. This issue only  affected\nUbuntu 22.04 LTS. (CVE-2023-45139)\n\nIt was discovered that fontTools was vulnerable to path traversal attacks.\nIf a user or automated system were tricked into extracting a specially\ncrafted .designspace file, an attacker could possibly use this issue to\nwrite arbitrary files outside the target directory, resulting in remote\ncode execution. This issue only affected Ubuntu 24.04 LTS, Ubuntu 25.04\nand Ubuntu 25.10. (CVE-2025-66034)",
  "id": "USN-7917-1",
  "modified": "2026-04-27T14:11:47Z",
  "published": "2025-12-09T17:08:58Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-7917-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2023-45139"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2025-66034"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "fonttools vulnerabilities",
  "upstream": [
    "UBUNTU-CVE-2023-45139",
    "UBUNTU-CVE-2025-66034"
  ]
}

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.

Detection rules are retrieved from Rulezet.

Action not permitted

ubuntu-cve-2023-45139

Vulnerability from osv_ubuntu

CVE-2023-45139 (GCVE-0-2023-45139)

usn-7917-1

Vulnerability from osv_ubuntu

Tags

Sightings

Nomenclature