{"id":"UBUNTU-CVE-2019-18397","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IRC message to be viewed in HexChat.","modified":"2026-02-04T03:54:27.668765Z","published":"2019-11-07T17:00:00Z","withdrawn":"2025-07-18T16:45:24Z","related":["USN-4179-1"],"upstream":["CVE-2019-18397"],"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"}],"affected":[{"package":{"name":"fribidi","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/fribidi@0.19.7-1?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.19.7-1"}]}],"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"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-18397.json"}},{"package":{"name":"fribidi","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/fribidi@0.19.7-2?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.19.7-2"}]}],"versions":["0.19.7-1"],"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"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-18397.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]}