{"id":"DEBIAN-CVE-2023-35956","details":"Multiple heap-based buffer overflow vulnerabilities exist in the fstReaderIterBlocks2 VCDATA parsing functionality of GTKWave 3.3.115. A specially-crafted .fst file can lead to arbitrary code execution. A victim would need to open a malicious file to trigger these vulnerabilities.This vulnerability concerns the decompression function `fastlz_decompress`.","modified":"2026-06-15T19:04:36.650903982Z","published":"2024-01-08T15:15:10.620Z","upstream":["CVE-2023-35956"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2023-35956"}],"affected":[{"package":{"name":"gtkwave","ecosystem":"Debian:11","purl":"pkg:deb/debian/gtkwave?arch=source&distro=bullseye"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.3.104+really3.3.118-0+deb11u1"}]}],"versions":["3.3.104-2"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2023-35956.json"}},{"package":{"name":"gtkwave","ecosystem":"Debian:12","purl":"pkg:deb/debian/gtkwave?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.3.118-0.1~deb12u1"}]}],"versions":["3.3.114-2","3.3.115-1","3.3.116-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2023-35956.json"}},{"package":{"name":"gtkwave","ecosystem":"Debian:13","purl":"pkg:deb/debian/gtkwave?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.3.118-0.1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2023-35956.json"}},{"package":{"name":"gtkwave","ecosystem":"Debian:14","purl":"pkg:deb/debian/gtkwave?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.3.118-0.1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2023-35956.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"}]}