{"id":"DEBIAN-CVE-2007-4770","details":"libicu in International Components for Unicode (ICU) 3.8.1 and earlier attempts to process backreferences to the nonexistent capture group zero (aka \\0), which might allow context-dependent attackers to read from, or write to, out-of-bounds memory locations, related to corruption of REStackFrames.","modified":"2026-09-01T20:00:43.606389157Z","published":"2008-01-29T00:00:00Z","upstream":["CVE-2007-4770"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2007-4770"}],"affected":[{"package":{"name":"icu","ecosystem":"Debian:12","purl":"pkg:deb/debian/icu?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.8-6"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2007-4770.json"}},{"package":{"name":"icu","ecosystem":"Debian:13","purl":"pkg:deb/debian/icu?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.8-6"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2007-4770.json"}},{"package":{"name":"icu","ecosystem":"Debian:14","purl":"pkg:deb/debian/icu?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.8-6"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2007-4770.json"}}],"schema_version":"1.9.0"}