ubuntu-cve-2020-26682
Vulnerability from osv_ubuntu
Published
2020-10-16 14:15
Modified
2026-04-22 07:39
Summary
Details

In libass 0.14.0, the ass_outline_construct's call to outline_stroke causes a signed integer overflow.

Severity
8.8 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
N/A (UNKNOWN)
medium
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libass9",
            "binary_version": "1:0.14.0-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "libass",
        "purl": "pkg:deb/ubuntu/libass@1:0.14.0-1?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1:0.13.7-2",
        "1:0.14.0-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libass9",
            "binary_version": "1:0.14.0-2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "libass",
        "purl": "pkg:deb/ubuntu/libass@1:0.14.0-2?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1:0.14.0-2"
      ]
    }
  ],
  "aliases": [],
  "details": "In libass 0.14.0, the `ass_outline_construct`\u0027s call to `outline_stroke` causes a signed integer overflow.",
  "id": "UBUNTU-CVE-2020-26682",
  "modified": "2026-04-22T07:39:35Z",
  "published": "2020-10-16T14:15:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-26682"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/libass/libass/issues/431"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/libass/libass/pull/432"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2020-26682"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/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-2020-26682"
  ]
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.