Vulnerability-Lookup

ubuntu-cve-2018-20751

Vulnerability from osv_ubuntu

Published

2019-02-04 19:29

Modified

2026-04-22 07:38

Summary

Details

An issue was discovered in crop_page in PoDoFo 0.9.6. For a crafted PDF document, pPage->GetObject()->GetDictionary().AddKey(PdfName("MediaBox"),var) can be problematic due to the function GetObject() being called for the pPage NULL pointer object. The value of pPage at this point is 0x0, which causes a NULL pointer dereference.

Severity

8.8 (High)


                    
                      CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2018-20751	REPORT
	https://sourceforge.net/p/podofo/tickets/33/	REPORT
	https://sourceforge.net/p/podofo/code/1954	REPORT
	https://research.loginsoft.com/bugs/null-pointer-…	REPORT
	https://www.cve.org/CVERecord?id=CVE-2018-20751	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libpodofo-utils",
            "binary_version": "0.9.0-1.2ubuntu0.1~esm3"
          },
          {
            "binary_name": "libpodofo0.9.0",
            "binary_version": "0.9.0-1.2ubuntu0.1~esm3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:14.04:LTS",
        "name": "libpodofo",
        "purl": "pkg:deb/ubuntu/libpodofo@0.9.0-1.2ubuntu0.1~esm3?arch=source\u0026distro=esm-infra-legacy/trusty"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.9.0-1.1ubuntu1",
        "0.9.0-1.2",
        "0.9.0-1.2ubuntu0.1~esm1",
        "0.9.0-1.2ubuntu0.1~esm3"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libpodofo-utils",
            "binary_version": "0.9.3-4ubuntu0.1~esm1"
          },
          {
            "binary_name": "libpodofo0.9.3",
            "binary_version": "0.9.3-4ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "libpodofo",
        "purl": "pkg:deb/ubuntu/libpodofo@0.9.3-4ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.9.0-1.3",
        "0.9.3-3",
        "0.9.3-4",
        "0.9.3-4ubuntu0.1~esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libpodofo-utils",
            "binary_version": "0.9.5-9ubuntu0.1~esm1"
          },
          {
            "binary_name": "libpodofo0.9.5",
            "binary_version": "0.9.5-9ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:18.04:LTS",
        "name": "libpodofo",
        "purl": "pkg:deb/ubuntu/libpodofo@0.9.5-9ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.9.5-6",
        "0.9.5-8",
        "0.9.5-8build1",
        "0.9.5-9",
        "0.9.5-9ubuntu0.1~esm1"
      ]
    }
  ],
  "aliases": [],
  "details": "An issue was discovered in crop_page in PoDoFo 0.9.6. For a crafted PDF document, pPage-\u003eGetObject()-\u003eGetDictionary().AddKey(PdfName(\"MediaBox\"),var) can be problematic due to the function GetObject() being called for the pPage NULL pointer object. The value of pPage at this point is 0x0, which causes a NULL pointer dereference.",
  "id": "UBUNTU-CVE-2018-20751",
  "modified": "2026-04-22T07:38:47Z",
  "published": "2019-02-04T19:29:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2018-20751"
    },
    {
      "type": "REPORT",
      "url": "https://sourceforge.net/p/podofo/tickets/33/"
    },
    {
      "type": "REPORT",
      "url": "https://sourceforge.net/p/podofo/code/1954"
    },
    {
      "type": "REPORT",
      "url": "https://research.loginsoft.com/bugs/null-pointer-dereference-vulnerability-in-crop_page-podofo-0-9-6/"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2018-20751"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2018-20751"
  ]
}

CVE-2018-20751 (GCVE-0-2018-20751)

Vulnerability from cvelistv5 – Published: 2019-02-04 19:00 – Updated: 2024-09-17 02:01

Summary

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root

References

2 references

URL	Tags
https://research.loginsoft.com/bugs/null-pointer-…	x_refsource_MISC
https://sourceforge.net/p/podofo/tickets/33/	x_refsource_MISC

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-05T12:12:29.224Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
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            "url": "https://research.loginsoft.com/bugs/null-pointer-dereference-vulnerability-in-crop_page-podofo-0-9-6/"
          },
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            ],
            "url": "https://sourceforge.net/p/podofo/tickets/33/"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
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          "vendor": "n/a",
          "versions": [
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      "descriptions": [
        {
          "lang": "en",
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        }
      ],
      "problemTypes": [
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            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2019-02-04T19:00:00.000Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
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          ],
          "url": "https://research.loginsoft.com/bugs/null-pointer-dereference-vulnerability-in-crop_page-podofo-0-9-6/"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://sourceforge.net/p/podofo/tickets/33/"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "cve@mitre.org",
          "ID": "CVE-2018-20751",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
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                      "version": {
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                      }
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  "cveMetadata": {
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    "dateReserved": "2019-02-04T00:00:00.000Z",
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}

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.