{"id":"CVE-2020-24753","details":"A memory corruption vulnerability in Objective Open CBOR Run-time (oocborrt) in versions before 2020-08-12 could allow an attacker to execute code via crafted Concise Binary Object Representation (CBOR) input to the cbor2json decoder. An uncaught error while decoding CBOR Major Type 3 text strings leads to the use of an attacker-controllable uninitialized stack value. This can be used to modify memory, causing a crash or potentially exploitable heap corruption.","modified":"2026-04-10T06:03:18.669645Z","published":"2020-09-17T18:15:12.320Z","references":[{"type":"FIX","url":"https://github.com/objsys/oocborrt/commit/539851c66778f68a244633985f6f8d0df94ea3b3"},{"type":"EVIDENCE","url":"https://warcollar.com/cve-2020-24753.html"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/objsys/oocborrt","events":[{"introduced":"0"},{"fixed":"539851c66778f68a244633985f6f8d0df94ea3b3"}]},{"type":"GIT","repo":"https://github.com/objsys/oocborrt","events":[{"introduced":"0"},{"fixed":"539851c66778f68a244633985f6f8d0df94ea3b3"}]}],"database_specific":{"unresolved_ranges":[{"events":[{"introduced":"0"},{"fixed":"2020-08-12"}]},{"events":[{"introduced":"0"},{"fixed":"2020-08-12"}]}],"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2020-24753.json","vanir_signatures_modified":"2026-04-10T06:03:18Z","vanir_signatures":[{"signature_version":"v1","deprecated":false,"digest":{"function_hash":"15965622230956711754229119114543034177","length":3014},"source":"https://github.com/objsys/oocborrt/commit/539851c66778f68a244633985f6f8d0df94ea3b3","id":"CVE-2020-24753-2f009dab","signature_type":"Function","target":{"file":"util/cbor2json.c","function":"cbor2json"}},{"signature_version":"v1","deprecated":false,"digest":{"line_hashes":["29850197593772512274951254950921194779","271994113519099298892212239242160950176","74768455046856666486715132268908730478","232839377084919003884958033439447754040"],"threshold":0.9},"source":"https://github.com/objsys/oocborrt/commit/539851c66778f68a244633985f6f8d0df94ea3b3","id":"CVE-2020-24753-404f680d","signature_type":"Line","target":{"file":"util/cbor2json.c"}}]}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}]}