Vulnerability-Lookup

CVE-2021-3630 (GCVE-0-2021-3630)

Vulnerability from cvelistv5 – Published: 2021-06-30 13:27 – Updated: 2024-08-03 17:01

Summary

An out-of-bounds write vulnerability was found in DjVuLibre in DJVU::DjVuTXT::decode() in DjVuText.cpp via a crafted djvu file which may lead to crash and segmentation fault. This flaw affects DjVuLibre versions prior to 3.5.28.

Severity

5.5 (Medium)


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

CWE

CWE-787

Assigner

fedora CNA under the redhat root

CNA scorecard C 69/100 over 42 records in the last 180 days details

References

7 references

URL	Tags
https://bugzilla.redhat.com/show_bug.cgi?id=1977427	x_refsource_MISC
https://lists.debian.org/debian-lts-announce/2021…	mailing-listx_refsource_MLIST
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisoryx_refsource_FEDORA
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisoryx_refsource_FEDORA
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisoryx_refsource_FEDORA
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisoryx_refsource_FEDORA
https://www.debian.org/security/2021/dsa-5032	vendor-advisoryx_refsource_DEBIAN

Impacted products

1 product

Vendor	Product	Version	CPE status
n/a	djvulibre	Affected: DjVuLibre 3.5.28

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T17:01:07.833Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1977427"
          },
          {
            "name": "[debian-lts-announce] 20210703 [SECURITY] [DLA 2702-1] djvulibre security update",
            "tags": [
              "mailing-list",
              "x_refsource_MLIST",
              "x_transferred"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2021/07/msg00002.html"
          },
          {
            "name": "FEDORA-2021-fd6f2727c8",
            "tags": [
              "vendor-advisory",
              "x_refsource_FEDORA",
              "x_transferred"
            ],
            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XVKYWV4P5XGA3FXKGFB443MKC32L7YQB/"
          },
          {
            "name": "FEDORA-2021-7514c11a37",
            "tags": [
              "vendor-advisory",
              "x_refsource_FEDORA",
              "x_transferred"
            ],
            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Q3B4QZCICPZRDXA2HOIACSQNZB2VEHSM/"
          },
          {
            "name": "FEDORA-2021-d19172badb",
            "tags": [
              "vendor-advisory",
              "x_refsource_FEDORA",
              "x_transferred"
            ],
            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CIZIAJWGKI26DKDOGJS7J7CIQGHHMIHG/"
          },
          {
            "name": "FEDORA-2021-6422a16aed",
            "tags": [
              "vendor-advisory",
              "x_refsource_FEDORA",
              "x_transferred"
            ],
            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7MRXCW4BUGAJLGF6IWQWUZ2YBICMZCPK/"
          },
          {
            "name": "DSA-5032",
            "tags": [
              "vendor-advisory",
              "x_refsource_DEBIAN",
              "x_transferred"
            ],
            "url": "https://www.debian.org/security/2021/dsa-5032"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "djvulibre",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "DjVuLibre 3.5.28"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "An out-of-bounds write vulnerability was found in DjVuLibre in DJVU::DjVuTXT::decode() in DjVuText.cpp via a crafted djvu file which may lead to crash and segmentation fault. This flaw affects DjVuLibre versions prior to 3.5.28."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-787",
              "description": "CWE-787",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2021-12-28T22:06:22.000Z",
        "orgId": "92fb86c3-55a5-4fb5-9c3f-4757b9e96dc5",
        "shortName": "fedora"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1977427"
        },
        {
          "name": "[debian-lts-announce] 20210703 [SECURITY] [DLA 2702-1] djvulibre security update",
          "tags": [
            "mailing-list",
            "x_refsource_MLIST"
          ],
          "url": "https://lists.debian.org/debian-lts-announce/2021/07/msg00002.html"
        },
        {
          "name": "FEDORA-2021-fd6f2727c8",
          "tags": [
            "vendor-advisory",
            "x_refsource_FEDORA"
          ],
          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XVKYWV4P5XGA3FXKGFB443MKC32L7YQB/"
        },
        {
          "name": "FEDORA-2021-7514c11a37",
          "tags": [
            "vendor-advisory",
            "x_refsource_FEDORA"
          ],
          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Q3B4QZCICPZRDXA2HOIACSQNZB2VEHSM/"
        },
        {
          "name": "FEDORA-2021-d19172badb",
          "tags": [
            "vendor-advisory",
            "x_refsource_FEDORA"
          ],
          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CIZIAJWGKI26DKDOGJS7J7CIQGHHMIHG/"
        },
        {
          "name": "FEDORA-2021-6422a16aed",
          "tags": [
            "vendor-advisory",
            "x_refsource_FEDORA"
          ],
          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7MRXCW4BUGAJLGF6IWQWUZ2YBICMZCPK/"
        },
        {
          "name": "DSA-5032",
          "tags": [
            "vendor-advisory",
            "x_refsource_DEBIAN"
          ],
          "url": "https://www.debian.org/security/2021/dsa-5032"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "patrick@puiterwijk.org",
          "ID": "CVE-2021-3630",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "djvulibre",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "DjVuLibre 3.5.28"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "n/a"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "An out-of-bounds write vulnerability was found in DjVuLibre in DJVU::DjVuTXT::decode() in DjVuText.cpp via a crafted djvu file which may lead to crash and segmentation fault. This flaw affects DjVuLibre versions prior to 3.5.28."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "CWE-787"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://bugzilla.redhat.com/show_bug.cgi?id=1977427",
              "refsource": "MISC",
              "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1977427"
            },
            {
              "name": "[debian-lts-announce] 20210703 [SECURITY] [DLA 2702-1] djvulibre security update",
              "refsource": "MLIST",
              "url": "https://lists.debian.org/debian-lts-announce/2021/07/msg00002.html"
            },
            {
              "name": "FEDORA-2021-fd6f2727c8",
              "refsource": "FEDORA",
              "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XVKYWV4P5XGA3FXKGFB443MKC32L7YQB/"
            },
            {
              "name": "FEDORA-2021-7514c11a37",
              "refsource": "FEDORA",
              "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/Q3B4QZCICPZRDXA2HOIACSQNZB2VEHSM/"
            },
            {
              "name": "FEDORA-2021-d19172badb",
              "refsource": "FEDORA",
              "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/CIZIAJWGKI26DKDOGJS7J7CIQGHHMIHG/"
            },
            {
              "name": "FEDORA-2021-6422a16aed",
              "refsource": "FEDORA",
              "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/7MRXCW4BUGAJLGF6IWQWUZ2YBICMZCPK/"
            },
            {
              "name": "DSA-5032",
              "refsource": "DEBIAN",
              "url": "https://www.debian.org/security/2021/dsa-5032"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "92fb86c3-55a5-4fb5-9c3f-4757b9e96dc5",
    "assignerShortName": "fedora",
    "cveId": "CVE-2021-3630",
    "datePublished": "2021-06-30T13:27:28.000Z",
    "dateReserved": "2021-06-29T00:00:00.000Z",
    "dateUpdated": "2024-08-03T17:01:07.833Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2021-3630",
      "date": "2026-11-02",
      "epss": "0.01012",
      "percentile": "0.63206"
    },
    "nvd": {
      "cve": {
        "configurations": [
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:a:djvulibre_project:djvulibre:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "056214A0-F19C-4035-A84F-9AE895323A5A",
                    "versionEndExcluding": "3.5.28",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          },
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*",
                    "matchCriteriaId": "DEECE5FC-CACF-4496-A3E7-164736409252",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*",
                    "matchCriteriaId": "07B237A9-69A3-4A9C-9DA0-4E06BD37AE73",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*",
                    "matchCriteriaId": "FA6FEEC2-9F11-4643-8827-749718254FED",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          },
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*",
                    "matchCriteriaId": "E460AA51-FCDA-46B9-AE97-E6676AA5E194",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*",
                    "matchCriteriaId": "A930E247-0B43-43CB-98FF-6CE7B8189835",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "An out-of-bounds write vulnerability was found in DjVuLibre in DJVU::DjVuTXT::decode() in DjVuText.cpp via a crafted djvu file which may lead to crash and segmentation fault. This flaw affects DjVuLibre versions prior to 3.5.28."
          },
          {
            "lang": "es",
            "value": "Se ha encontrado una vulnerabilidad de escritura fuera de los l\u00edmites en DjVuLibre en la funci\u00f3n DJVU::DjVuTXT::decode() en el archivo DjVuText.cpp por medio de un archivo djvu dise\u00f1ado que puede conllevar a un fallo de bloqueo y segmentaci\u00f3n. Este fallo afecta a las versiones de DjVuLibre versiones anteriores a 3.5.28"
          }
        ],
        "id": "CVE-2021-3630",
        "lastModified": "2024-11-21T06:22:01.317",
        "metrics": {
          "cvssMetricV2": [
            {
              "acInsufInfo": false,
              "baseSeverity": "MEDIUM",
              "cvssData": {
                "accessComplexity": "MEDIUM",
                "accessVector": "NETWORK",
                "authentication": "NONE",
                "availabilityImpact": "PARTIAL",
                "baseScore": 4.3,
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "vectorString": "AV:N/AC:M/Au:N/C:N/I:N/A:P",
                "version": "2.0"
              },
              "exploitabilityScore": 8.6,
              "impactScore": 2.9,
              "obtainAllPrivilege": false,
              "obtainOtherPrivilege": false,
              "obtainUserPrivilege": false,
              "source": "nvd@nist.gov",
              "type": "Primary",
              "userInteractionRequired": true
            }
          ],
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "LOCAL",
                "availabilityImpact": "HIGH",
                "baseScore": 5.5,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "REQUIRED",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 1.8,
              "impactScore": 3.6,
              "source": "nvd@nist.gov",
              "type": "Primary"
            }
          ]
        },
        "published": "2021-06-30T14:15:08.797",
        "references": [
          {
            "source": "patrick@puiterwijk.org",
            "tags": [
              "Issue Tracking",
              "Patch",
              "Third Party Advisory"
            ],
            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1977427"
          },
          {
            "source": "patrick@puiterwijk.org",
            "tags": [
              "Mailing List",
              "Third Party Advisory"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2021/07/msg00002.html"
          },
          {
            "source": "patrick@puiterwijk.org",
            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7MRXCW4BUGAJLGF6IWQWUZ2YBICMZCPK/"
          },
          {
            "source": "patrick@puiterwijk.org",
            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CIZIAJWGKI26DKDOGJS7J7CIQGHHMIHG/"
          },
          {
            "source": "patrick@puiterwijk.org",
            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Q3B4QZCICPZRDXA2HOIACSQNZB2VEHSM/"
          },
          {
            "source": "patrick@puiterwijk.org",
            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XVKYWV4P5XGA3FXKGFB443MKC32L7YQB/"
          },
          {
            "source": "patrick@puiterwijk.org",
            "tags": [
              "Third Party Advisory"
            ],
            "url": "https://www.debian.org/security/2021/dsa-5032"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Issue Tracking",
              "Patch",
              "Third Party Advisory"
            ],
            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1977427"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Mailing List",
              "Third Party Advisory"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2021/07/msg00002.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7MRXCW4BUGAJLGF6IWQWUZ2YBICMZCPK/"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CIZIAJWGKI26DKDOGJS7J7CIQGHHMIHG/"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Q3B4QZCICPZRDXA2HOIACSQNZB2VEHSM/"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XVKYWV4P5XGA3FXKGFB443MKC32L7YQB/"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Third Party Advisory"
            ],
            "url": "https://www.debian.org/security/2021/dsa-5032"
          }
        ],
        "sourceIdentifier": "patrick@puiterwijk.org",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-787"
              }
            ],
            "source": "patrick@puiterwijk.org",
            "type": "Secondary"
          },
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-787"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "current_release_date": "2026-03-27T04:35:50+00:00",
      "cve": "CVE-2021-3630",
      "id": "CVE-2021-3630",
      "initial_release_date": "2021-01-01T00:00:00+00:00",
      "product_status:known_not_affected": "1",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "djvulibre: out-of-bounds write in DJVU::DjVuTXT::decode() in DjVuText.cpp",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-3630.json",
      "version": "3"
    }
  }
}

SUSE-SU-2021:14773-1

Vulnerability from csaf_suse - Published: 2021-08-04 13:01 - Updated: 2026-09-20 13:55

Summary

Security update for djvulibre

Severity

Important

Scope

1 vulnerability in this advisory, including CVE-2021-3630.

CVE-2021-3630

7.3 (High)


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

Recommended: 17 products

Open the full advisory

SUSE-SU-2021:2619-1

Vulnerability from csaf_suse - Published: 2021-08-05 08:35 - Updated: 2026-09-20 14:02

Summary

Security update for djvulibre

Severity

Important

Scope

1 vulnerability in this advisory, including CVE-2021-3630.

CVE-2021-3630

7.3 (High)


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

Recommended: 152 products

Open the full advisory

SUSE-SU-2021:2621-1

Vulnerability from csaf_suse - Published: 2021-08-05 08:36 - Updated: 2026-09-20 14:02

Summary

Security update for djvulibre

Severity

Important

Scope

1 vulnerability in this advisory, including CVE-2021-3630.

CVE-2021-3630

7.3 (High)


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

Recommended: 52 products

Open the full advisory

SUSE-SU-2021:2796-1

Vulnerability from csaf_suse - Published: 2021-08-20 08:32 - Updated: 2026-09-20 14:03

Summary

Security update for djvulibre

Severity

Important

Scope

1 vulnerability in this advisory, including CVE-2021-3630.

CVE-2021-3630

7.3 (High)


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

Recommended: 88 products

Open the full advisory

UBUNTU-CVE-2021-3630 (CVE-2021-3630)

Vulnerability from osv_ubuntu – Published: 2021-06-30 14:15 – Updated: 2026-04-22 07:39 – Source website

Details

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)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2021-3630	REPORT
	https://sourceforge.net/p/djvu/bugs/302/	REPORT
	https://sourceforge.net/p/djvu/djvulibre-git/ci/7…	REPORT
	https://bugzilla.redhat.com/show_bug.cgi?id=1977427	REPORT
	https://ubuntu.com/security/notices/USN-5005-1	ADVISORY
	https://www.cve.org/CVERecord?id=CVE-2021-3630	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "djview",
            "binary_version": "3.5.27.1-5ubuntu0.1+esm2"
          },
          {
            "binary_name": "djview3",
            "binary_version": "3.5.27.1-5ubuntu0.1+esm2"
          },
          {
            "binary_name": "djvulibre-bin",
            "binary_version": "3.5.27.1-5ubuntu0.1+esm2"
          },
          {
            "binary_name": "djvulibre-desktop",
            "binary_version": "3.5.27.1-5ubuntu0.1+esm2"
          },
          {
            "binary_name": "djvuserve",
            "binary_version": "3.5.27.1-5ubuntu0.1+esm2"
          },
          {
            "binary_name": "libdjvulibre-text",
            "binary_version": "3.5.27.1-5ubuntu0.1+esm2"
          },
          {
            "binary_name": "libdjvulibre21",
            "binary_version": "3.5.27.1-5ubuntu0.1+esm2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "djvulibre",
        "purl": "pkg:deb/ubuntu/djvulibre@3.5.27.1-5ubuntu0.1+esm2?arch=source\u0026distro=esm-infra/xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.5.27.1-5ubuntu0.1+esm2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.5.27.1-3",
        "3.5.27.1-4",
        "3.5.27.1-5",
        "3.5.27.1-5ubuntu0.1",
        "3.5.27.1-5ubuntu0.1+esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "djview",
            "binary_version": "3.5.27.1-8ubuntu0.4"
          },
          {
            "binary_name": "djview3",
            "binary_version": "3.5.27.1-8ubuntu0.4"
          },
          {
            "binary_name": "djvulibre-bin",
            "binary_version": "3.5.27.1-8ubuntu0.4"
          },
          {
            "binary_name": "djvulibre-desktop",
            "binary_version": "3.5.27.1-8ubuntu0.4"
          },
          {
            "binary_name": "djvuserve",
            "binary_version": "3.5.27.1-8ubuntu0.4"
          },
          {
            "binary_name": "libdjvulibre-text",
            "binary_version": "3.5.27.1-8ubuntu0.4"
          },
          {
            "binary_name": "libdjvulibre21",
            "binary_version": "3.5.27.1-8ubuntu0.4"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "djvulibre",
        "purl": "pkg:deb/ubuntu/djvulibre@3.5.27.1-8ubuntu0.4?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.5.27.1-8ubuntu0.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.5.27.1-7",
        "3.5.27.1-8",
        "3.5.27.1-8ubuntu0.1",
        "3.5.27.1-8ubuntu0.2",
        "3.5.27.1-8ubuntu0.3"
      ]
    }
  ],
  "aliases": [],
  "details": "An out-of-bounds write vulnerability was found in DjVuLibre in DJVU::DjVuTXT::decode() in DjVuText.cpp via a crafted djvu file which may lead to crash and segmentation fault. This flaw affects DjVuLibre versions prior to 3.5.28.",
  "id": "UBUNTU-CVE-2021-3630",
  "modified": "2026-04-22T07:39:47Z",
  "published": "2021-06-30T14:15:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-3630"
    },
    {
      "type": "REPORT",
      "url": "https://sourceforge.net/p/djvu/bugs/302/"
    },
    {
      "type": "REPORT",
      "url": "https://sourceforge.net/p/djvu/djvulibre-git/ci/7b0ef20690e08f1fe124aebbf42f6310e2f40f81/"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1977427"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-5005-1"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-3630"
    }
  ],
  "related": [
    "USN-5005-1"
  ],
  "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": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2021-3630"
  ]
}

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.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

Order JSON

Publication & reservation Sightings KEV catalogs Other timestamps

Loading timeline…

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.

Action not permitted

CVE-2021-3630 (GCVE-0-2021-3630)

SUSE-SU-2021:14773-1

SUSE-SU-2021:2619-1

SUSE-SU-2021:2621-1

SUSE-SU-2021:2796-1

UBUNTU-CVE-2021-3630 (CVE-2021-3630)

Tags

Sightings

Nomenclature

Vulnerability timeline

Related by attack behaviour