ubuntu-cve-2020-29385
Vulnerability from osv_ubuntu
Published
2020-12-08 00:00
Modified
2026-04-22 07:39
Summary
Details

GNOME gdk-pixbuf (aka GdkPixbuf) before 2.42.2 allows a denial of service (infinite loop) in lzw.c in the function write_indexes. if c->self_code equals 10, self->code_table[10].extends will assign the value 11 to c. The next execution in the loop will assign self->code_table[11].extends to c, which will give the value of 10. This will make the loop run infinitely. This bug can, for example, be triggered by calling this function with a GIF image with LZW compression that is crafted in a special way.

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
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "gir1.2-gdkpixbuf-2.0",
            "binary_version": "2.40.0+dfsg-3ubuntu0.1"
          },
          {
            "binary_name": "libgdk-pixbuf2.0-0",
            "binary_version": "2.40.0+dfsg-3ubuntu0.1"
          },
          {
            "binary_name": "libgdk-pixbuf2.0-bin",
            "binary_version": "2.40.0+dfsg-3ubuntu0.1"
          },
          {
            "binary_name": "libgdk-pixbuf2.0-common",
            "binary_version": "2.40.0+dfsg-3ubuntu0.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "gdk-pixbuf",
        "purl": "pkg:deb/ubuntu/gdk-pixbuf@2.40.0+dfsg-3ubuntu0.1?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.40.0+dfsg-3ubuntu0.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.40.0+dfsg-1build1",
        "2.40.0+dfsg-1ubuntu1",
        "2.40.0+dfsg-2",
        "2.40.0+dfsg-3"
      ]
    }
  ],
  "aliases": [],
  "details": "GNOME gdk-pixbuf (aka GdkPixbuf) before 2.42.2 allows a denial of service (infinite loop) in lzw.c in the function write_indexes. if c-\u003eself_code equals 10, self-\u003ecode_table[10].extends will assign the value 11 to c. The next execution in the loop will assign self-\u003ecode_table[11].extends to c, which will give the value of 10. This will make the loop run infinitely. This bug can, for example, be triggered by calling this function with a GIF image with LZW compression that is crafted in a special way.",
  "id": "UBUNTU-CVE-2020-29385",
  "modified": "2026-04-22T07:39:39Z",
  "published": "2020-12-08T00:00:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-29385"
    },
    {
      "type": "REPORT",
      "url": "https://mail.gnome.org/archives/distributor-list/2020-December/msg00000.html"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-4663-1"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2020-29385"
    }
  ],
  "related": [
    "USN-4663-1"
  ],
  "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-2020-29385"
  ]
}



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