{"id":"CVE-2020-24340","details":"An issue was discovered in picoTCP and picoTCP-NG through 1.7.0. The code that processes DNS responses in pico_mdns_handle_data_as_answers_generic() in pico_mdns.c does not check whether the number of answers/responses specified in a DNS packet header corresponds to the response data available in the packet, leading to an out-of-bounds read, invalid pointer dereference, and Denial-of-Service.","modified":"2026-04-10T04:24:55.104752Z","published":"2020-12-11T23:15:14.090Z","references":[{"type":"ADVISORY","url":"https://us-cert.cisa.gov/ics/advisories/icsa-20-343-01"},{"type":"ADVISORY","url":"https://www.kb.cert.org/vuls/id/815128"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/tass-belgium/picotcp","events":[{"introduced":"0"},{"last_affected":"13c00a067190f5ec62340ed932a2bb833c366d63"},{"introduced":"0"},{"last_affected":"13c00a067190f5ec62340ed932a2bb833c366d63"}],"database_specific":{"versions":[{"introduced":"0"},{"last_affected":"1.7.0"},{"introduced":"0"},{"last_affected":"1.7.0"}]}}],"versions":["V1.0","V1.2.4","sprint0","sprint1","sprint2","sprint3","sprint4","sprint5","sprint6","sprint7","sprint8","v1.2","v1.2.1","v1.2.2","v1.3.0","v1.5.0","v1.5.1","v1.6.0","v1.6.1","v1.6.2","v1.7.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-24340.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}