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zziplib — security advisory

Type: advisorySources: OSVAdvisory ID: UBUNTU-CVE-2020-18770

An issue was discovered in function zzip_disk_entry_to_file_header in mmapped.c in zziplib 0.13.69, which will lead to a denial-of-service.

Products
zziplib
Affected versions
0.13.62-3, 0.13.62-3.1, 0.13.62-3.1ubuntu0.18.04.1, 0.13.62-3.1ubuntu0.18.04.1+esm1, 0.13.62-3.2, 0.13.62-3.2ubuntu1, 0.13.62-3.2ubuntu1.1, 0.13.62-3ubuntu0.16.04.1, 0.13.62-3ubuntu0.16.04.2, 0.13.62-3ubuntu0.16.04.2+esm1, 0.13.72+dfsg.1-1.1, 0.13.72+dfsg.1-1.2, 0.13.72+dfsg.1-1.2build1, 0.13.78+dfsg.1-0.1, 0.13.78+dfsg.1-0.2
Fixed versions
Not specified
CVEs
CVE-2020-18770
Confirmed fixed CVEs
Not specified
Updated in this feed
31 Oct 2026, 00:56 UTC · Revision 1

Source evidence

UBUNTU-CVE-2020-18770

core-osv · Original source

Published 22 Aug 2023, 19:15 UTC

An issue was discovered in function zzip_disk_entry_to_file_header in mmapped.c in zziplib 0.13.69, which will lead to a denial-of-service.

osv:UBUNTU-CVE-2020-18770

zziplib

Fixed versions: Not specified

zziplib

Fixed versions: Not specified

zziplib

Fixed versions: Not specified

zziplib

Fixed versions: Not specified

zziplib

Fixed versions: Not specified

zziplib

Fixed versions: Not specified

zziplib

Fixed versions: Not specified

zziplib

Fixed versions: Not specified

Complete source record
{
  "id": "893203eb821e2dbd730333d2d75e9c5179403dfe0848a89b37ef4bd990289126",
  "url": "https://osv.dev/vulnerability/UBUNTU-CVE-2020-18770",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "UBUNTU-CVE-2020-18770",
    "summary": "An issue was discovered in function zzip_disk_entry_to_file_header in mmapped.c in zziplib 0.13.69, which will lead to a denial-of-service.",
    "evidence": "osv:UBUNTU-CVE-2020-18770",
    "products": [
      {
        "name": {
          "value": "zziplib",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "0.13.62-3",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "0.13.62-3ubuntu0.16.04.1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "0.13.62-3ubuntu0.16.04.2",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "0.13.62-3ubuntu0.16.04.2+esm1",
            "evidence": "/affected/0/versions"
          }
        ]
      },
      {
        "name": {
          "value": "zziplib",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "0.13.62-3.1",
            "evidence": "/affected/1/versions"
          },
          {
            "value": "0.13.62-3.1ubuntu0.18.04.1",
            "evidence": "/affected/1/versions"
          },
          {
            "value": "0.13.62-3.1ubuntu0.18.04.1+esm1",
            "evidence": "/affected/1/versions"
          }
        ]
      },
      {
        "name": {
          "value": "zziplib",
          "evidence": "/affected/2/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "0.13.62-3.2",
            "evidence": "/affected/2/versions"
          },
          {
            "value": "0.13.62-3.2ubuntu1",
            "evidence": "/affected/2/versions"
          },
          {
            "value": "0.13.62-3.2ubuntu1.1",
            "evidence": "/affected/2/versions"
          }
        ]
      },
      {
        "name": {
          "value": "zziplib",
          "evidence": "/affected/3/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "0.13.72+dfsg.1-1.1",
            "evidence": "/affected/3/versions"
          }
        ]
      },
      {
        "name": {
          "value": "zziplib",
          "evidence": "/affected/4/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "0.13.72+dfsg.1-1.1",
            "evidence": "/affected/4/versions"
          },
          {
            "value": "0.13.72+dfsg.1-1.2",
            "evidence": "/affected/4/versions"
          },
          {
            "value": "0.13.72+dfsg.1-1.2build1",
            "evidence": "/affected/4/versions"
          }
        ]
      },
      {
        "name": {
          "value": "zziplib",
          "evidence": "/affected/5/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "0.13.78+dfsg.1-0.1",
            "evidence": "/affected/5/versions"
          }
        ]
      },
      {
        "name": {
          "value": "zziplib",
          "evidence": "/affected/6/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "0.13.78+dfsg.1-0.2",
            "evidence": "/affected/6/versions"
          }
        ]
      },
      {
        "name": {
          "value": "zziplib",
          "evidence": "/affected/7/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "0.13.78+dfsg.1-0.1",
            "evidence": "/affected/7/versions"
          },
          {
            "value": "0.13.78+dfsg.1-0.2",
            "evidence": "/affected/7/versions"
          }
        ]
      }
    ],
    "severity": "medium",
    "structured": {
      "id": "UBUNTU-CVE-2020-18770",
      "aliases": [
        "UBUNTU-CVE-2020-18770"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"
        },
        {
          "type": "Ubuntu",
          "score": "medium"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "zziplib",
            "purl": "pkg:deb/ubuntu/zziplib?arch=source&distro=esm-infra%2Fxenial",
            "ecosystem": "Ubuntu:Pro:16.04:LTS"
          },
          "versions": [
            "0.13.62-3",
            "0.13.62-3ubuntu0.16.04.1",
            "0.13.62-3ubuntu0.16.04.2",
            "0.13.62-3ubuntu0.16.04.2+esm1"
          ],
          "database_specific": {
            "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-18770.json"
          },
          "ecosystem_specific": {
            "binaries": [
              {
                "binary_name": "libzzip-0-13",
                "binary_version": "0.13.62-3ubuntu0.16.04.2+esm1"
              },
              {
                "binary_name": "zziplib-bin",
                "binary_version": "0.13.62-3ubuntu0.16.04.2+esm1"
              }
            ]
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "zziplib",
            "purl": "pkg:deb/ubuntu/zziplib?arch=source&distro=esm-infra%2Fbionic",
            "ecosystem": "Ubuntu:Pro:18.04:LTS"
          },
          "versions": [
            "0.13.62-3.1",
            "0.13.62-3.1ubuntu0.18.04.1",
            "0.13.62-3.1ubuntu0.18.04.1+esm1"
          ],
          "database_specific": {
            "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-18770.json"
          },
          "ecosystem_specific": {
            "binaries": [
              {
                "binary_name": "libzzip-0-13",
                "binary_version": "0.13.62-3.1ubuntu0.18.04.1+esm1"
              },
              {
                "binary_name": "zziplib-bin",
                "binary_version": "0.13.62-3.1ubuntu0.18.04.1+esm1"
              }
            ]
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "zziplib",
            "purl": "pkg:deb/ubuntu/zziplib?arch=source&distro=focal",
            "ecosystem": "Ubuntu:20.04:LTS"
          },
          "versions": [
            "0.13.62-3.2",
            "0.13.62-3.2ubuntu1",
            "0.13.62-3.2ubuntu1.1"
          ],
          "database_specific": {
            "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-18770.json"
          },
          "ecosystem_specific": {
            "binaries": [
              {
                "binary_name": "libzzip-0-13",
                "binary_version": "0.13.62-3.2ubuntu1.1"
              },
              {
                "binary_name": "zziplib-bin",
                "binary_version": "0.13.62-3.2ubuntu1.1"
              }
            ]
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "zziplib",
            "purl": "pkg:deb/ubuntu/zziplib?arch=source&distro=jammy",
            "ecosystem": "Ubuntu:22.04:LTS"
          },
          "versions": [
            "0.13.72+dfsg.1-1.1"
          ],
          "database_specific": {
            "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-18770.json"
          },
          "ecosystem_specific": {
            "binaries": [
              {
                "binary_name": "libzzip-0-13",
                "binary_version": "0.13.72+dfsg.1-1.1"
              },
              {
                "binary_name": "zziplib-bin",
                "binary_version": "0.13.72+dfsg.1-1.1"
              }
            ]
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "zziplib",
            "purl": "pkg:deb/ubuntu/zziplib?arch=source&distro=noble",
            "ecosystem": "Ubuntu:24.04:LTS"
          },
          "versions": [
            "0.13.72+dfsg.1-1.1",
            "0.13.72+dfsg.1-1.2",
            "0.13.72+dfsg.1-1.2build1"
          ],
          "database_specific": {
            "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-18770.json"
          },
          "ecosystem_specific": {
            "binaries": [
              {
                "binary_name": "libzzip-0-13t64",
                "binary_version": "0.13.72+dfsg.1-1.2build1"
              },
              {
                "binary_name": "zziplib-bin",
                "binary_version": "0.13.72+dfsg.1-1.2build1"
              }
            ]
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "zziplib",
            "purl": "pkg:deb/ubuntu/zziplib?arch=source&distro=questing",
            "ecosystem": "Ubuntu:25.10"
          },
          "versions": [
            "0.13.78+dfsg.1-0.1"
          ],
          "database_specific": {
            "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-18770.json"
          },
          "ecosystem_specific": {
            "binaries": [
              {
                "binary_name": "libzzip-0-13t64",
                "binary_version": "0.13.78+dfsg.1-0.1"
              },
              {
                "binary_name": "zziplib-bin",
                "binary_version": "0.13.78+dfsg.1-0.1"
              }
            ]
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "zziplib",
            "purl": "pkg:deb/ubuntu/zziplib?arch=source&distro=stonking",
            "ecosystem": "Ubuntu:26.10"
          },
          "versions": [
            "0.13.78+dfsg.1-0.2"
          ],
          "database_specific": {
            "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-18770.json"
          },
          "ecosystem_specific": {
            "binaries": [
              {
                "binary_name": "libzzip-0-13t64",
                "binary_version": "0.13.78+dfsg.1-0.2"
              },
              {
                "binary_name": "zziplib-bin",
                "binary_version": "0.13.78+dfsg.1-0.2"
              }
            ]
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "zziplib",
            "purl": "pkg:deb/ubuntu/zziplib?arch=source&distro=resolute",
            "ecosystem": "Ubuntu:26.04:LTS"
          },
          "versions": [
            "0.13.78+dfsg.1-0.1",
            "0.13.78+dfsg.1-0.2"
          ],
          "database_specific": {
            "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-18770.json"
          },
          "ecosystem_specific": {
            "binaries": [
              {
                "binary_name": "libzzip-0-13t64",
                "binary_version": "0.13.78+dfsg.1-0.2"
              },
              {
                "binary_name": "zziplib-bin",
                "binary_version": "0.13.78+dfsg.1-0.2"
              }
            ]
          }
        }
      ],
      "modified": "2026-10-17T12:56:18.672592433Z",
      "provider": "osv",
      "upstream": [
        "CVE-2020-18770"
      ],
      "references": [
        "https://ubuntu.com/security/CVE-2020-18770",
        "https://github.com/gdraheim/zziplib/issues/69",
        "https://www.cve.org/CVERecord?id=CVE-2020-18770"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2020-18770",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 355203,
  "published_at": "2023-08-22T19:15:00+00:00"
}