{"id":"DEBIAN-CVE-2019-17263","details":"In libyal libfwsi before 20191006, libfwsi_extension_block_copy_from_byte_stream in libfwsi_extension_block.c has a heap-based buffer over-read because rejection of an unsupported size only considers values less than 6, even though values of 6 and 7 are also unsupported. NOTE: the vendor has disputed this as described in the GitHub issue","modified":"2026-09-21T07:03:08.014867619Z","published":"2019-10-06T22:15:10.227Z","upstream":["CVE-2019-17263"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2019-17263"}],"affected":[{"package":{"name":"libfwsi","ecosystem":"Debian:12","purl":"pkg:deb/debian/libfwsi?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["20181227-1.1","20181227-1.2","20181227-1.2~exp1","20181227-2","20240423-1"],"ecosystem_specific":{"urgency":"unimportant"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2019-17263.json"}},{"package":{"name":"libfwsi","ecosystem":"Debian:13","purl":"pkg:deb/debian/libfwsi?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["20240423-1"],"ecosystem_specific":{"urgency":"unimportant"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2019-17263.json"}},{"package":{"name":"libfwsi","ecosystem":"Debian:14","purl":"pkg:deb/debian/libfwsi?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["20240423-1"],"ecosystem_specific":{"urgency":"unimportant"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2019-17263.json"}},{"package":{"name":"liblnk","ecosystem":"Debian:12","purl":"pkg:deb/debian/liblnk?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["20181227-1.1","20181227-1.2","20181227-1.2~exp1","20181227-2","20240423-1"],"ecosystem_specific":{"urgency":"unimportant"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2019-17263.json"}},{"package":{"name":"liblnk","ecosystem":"Debian:13","purl":"pkg:deb/debian/liblnk?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["20240423-1"],"ecosystem_specific":{"urgency":"unimportant"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2019-17263.json"}},{"package":{"name":"liblnk","ecosystem":"Debian:14","purl":"pkg:deb/debian/liblnk?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["20240423-1"],"ecosystem_specific":{"urgency":"unimportant"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2019-17263.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L"}]}