ubuntu-cve-2019-18397
Vulnerability from osv_ubuntu
Published
2019-11-07 17:00
Modified
2025-07-16 04:55
Summary
Details

A buffer overflow in the fribidi_get_par_embedding_levels_ex() function in lib/fribidi-bidi.c of GNU FriBidi through 1.0.7 allows an attacker to cause a denial of service or possibly execute arbitrary code by delivering crafted text content to a user, when this content is then rendered by an application that uses FriBidi for text layout calculations. Examples include any GNOME or GTK+ based application that uses Pango for text layout, as this internally uses FriBidi for bidirectional text layout. For example, the attacker can construct a crafted text file to be opened in GEdit, or a crafted IRC message to be viewed in HexChat.

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

{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libfribidi-bin",
            "binary_version": "0.19.7-1"
          },
          {
            "binary_name": "libfribidi-dev",
            "binary_version": "0.19.7-1"
          },
          {
            "binary_name": "libfribidi0",
            "binary_version": "0.19.7-1"
          },
          {
            "binary_name": "libfribidi0-udeb",
            "binary_version": "0.19.7-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "fribidi",
        "purl": "pkg:deb/ubuntu/fribidi@0.19.7-1?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.19.7-1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": []
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libfribidi-bin",
            "binary_version": "0.19.7-2"
          },
          {
            "binary_name": "libfribidi-bin-dbgsym",
            "binary_version": "0.19.7-2"
          },
          {
            "binary_name": "libfribidi-dev",
            "binary_version": "0.19.7-2"
          },
          {
            "binary_name": "libfribidi0",
            "binary_version": "0.19.7-2"
          },
          {
            "binary_name": "libfribidi0-dbgsym",
            "binary_version": "0.19.7-2"
          },
          {
            "binary_name": "libfribidi0-udeb",
            "binary_version": "0.19.7-2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "fribidi",
        "purl": "pkg:deb/ubuntu/fribidi@0.19.7-2?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.19.7-2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.19.7-1"
      ]
    }
  ],
  "aliases": [],
  "details": "A buffer overflow in the fribidi_get_par_embedding_levels_ex() function in lib/fribidi-bidi.c of GNU FriBidi through 1.0.7 allows an attacker to cause a denial of service or possibly execute arbitrary code by delivering crafted text content to a user, when this content is then rendered by an application that uses FriBidi for text layout calculations. Examples include any GNOME or GTK+ based application that uses Pango for text layout, as this internally uses FriBidi for bidirectional text layout. For example, the attacker can construct a crafted text file to be opened in GEdit, or a crafted IRC message to be viewed in HexChat.",
  "id": "UBUNTU-CVE-2019-18397",
  "modified": "2025-07-16T04:55:01Z",
  "published": "2019-11-07T17:00:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2019-18397"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-4179-1"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2019-18397"
    }
  ],
  "related": [
    "USN-4179-1"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2019-18397"
  ],
  "withdrawn": "2025-07-18T16:45:24Z"
}



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