{"id":"CVE-2020-23930","details":"An issue was discovered in gpac through 20200801. A NULL pointer dereference exists in the function nhmldump_send_header located in write_nhml.c. It allows an attacker to cause Denial of Service.","modified":"2026-08-07T14:53:17.382739Z","published":"2021-04-21T18:15:08.417Z","references":[{"type":"ADVISORY","url":"https://github.com/gpac/gpac/commit/9eeac00b38348c664dfeae2525bba0cf1bc32349"},{"type":"ADVISORY","url":"https://github.com/gpac/gpac/issues/1565"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/gpac/gpac","events":[{"introduced":"0"},{"fixed":"d8538e8ae946b32d99c6b2c57cbb327146e9cd9d"},{"fixed":"9eeac00b38348c664dfeae2525bba0cf1bc32349"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"fixed":"1.0.1"}],"source":["CPE_RANGE","REFERENCES"],"cpe":"cpe:2.3:a:gpac:gpac:*:*:*:*:*:*:*:*"}}],"versions":["v0.7.1","v0.7.0","v0.6.0","v0.5.2"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-23930.json","vanir_signatures_modified":"2026-08-07T14:53:17Z","vanir_signatures":[{"target":{"file":"src/filters/write_nhml.c"},"deprecated":false,"digest":{"threshold":0.9,"line_hashes":["273365987222454724297359249226530248524","148396435000441226309173423878912363442","45585237414436127171925576937545840635","278661613006658029934394344360736263072"]},"id":"CVE-2020-23930-11407349","signature_type":"Line","signature_version":"v1","source":"https://github.com/gpac/gpac/commit/9eeac00b38348c664dfeae2525bba0cf1bc32349"},{"signature_version":"v1","source":"https://github.com/gpac/gpac/commit/9eeac00b38348c664dfeae2525bba0cf1bc32349","target":{"file":"src/filters/write_nhml.c","function":"nhmldump_send_header"},"deprecated":false,"digest":{"function_hash":"308095444081921113363681641521013641954","length":5664},"id":"CVE-2020-23930-372daa3a","signature_type":"Function"},{"deprecated":false,"digest":{"function_hash":"217265730055898313492699544444049551658","length":59602},"id":"CVE-2020-23930-757087f4","signature_type":"Function","signature_version":"v1","source":"https://github.com/gpac/gpac/commit/9eeac00b38348c664dfeae2525bba0cf1bc32349","target":{"file":"applications/mp4box/main.c","function":"mp4boxMain"}},{"signature_type":"Line","signature_version":"v1","source":"https://github.com/gpac/gpac/commit/9eeac00b38348c664dfeae2525bba0cf1bc32349","target":{"file":"applications/mp4box/main.c"},"deprecated":false,"digest":{"line_hashes":["324751016173844255721258964487809744136","291360413679397562029818288540798853298","135282687474570625443943415782746560765","89071588151960392334557332777645754063"],"threshold":0.9},"id":"CVE-2020-23930-f5d9e11c"}]}}],"schema_version":"1.8.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"}]}