{"id":"UBUNTU-CVE-2020-18976","details":"Buffer Overflow in Tcpreplay v4.3.2 allows attackers to cause a Denial of Service via the 'do_checksum' function in 'checksum.c'. It can be triggered by sending a crafted pcap file to the 'tcpreplay-edit' binary. This issue is different than CVE-2019-8381.","modified":"2025-09-08T16:46:16Z","published":"2021-08-25T16:15:00Z","upstream":["CVE-2020-18976"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-18976"},{"type":"REPORT","url":"https://github.com/appneta/tcpreplay/issues/556"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2020-18976"}],"affected":[{"package":{"name":"tcpreplay","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/tcpreplay@3.4.4-2+deb8u1ubuntu0.1~esm3?arch=source&distro=esm-apps/xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.4.4-2","3.4.4-2+deb8u1build0.16.04.1","3.4.4-2+deb8u1ubuntu0.1~esm1","3.4.4-2+deb8u1ubuntu0.1~esm2","3.4.4-2+deb8u1ubuntu0.1~esm3"],"ecosystem_specific":{"binaries":[{"binary_name":"tcpreplay","binary_version":"3.4.4-2+deb8u1ubuntu0.1~esm3"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-18976.json"}},{"package":{"name":"tcpreplay","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/tcpreplay@4.2.6-1ubuntu0.1~esm5?arch=source&distro=esm-apps/bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.2.6-1","4.2.6-1ubuntu0.1~esm1","4.2.6-1ubuntu0.1~esm2","4.2.6-1ubuntu0.1~esm3","4.2.6-1ubuntu0.1~esm4","4.2.6-1ubuntu0.1~esm5"],"ecosystem_specific":{"binaries":[{"binary_name":"tcpreplay","binary_version":"4.2.6-1ubuntu0.1~esm5"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-18976.json"}},{"package":{"name":"tcpreplay","ecosystem":"Ubuntu:Pro:20.04:LTS","purl":"pkg:deb/ubuntu/tcpreplay@4.3.2-1ubuntu0.1~esm3?arch=source&distro=esm-apps/focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.3.2-1build1","4.3.2-1ubuntu0.1~esm1","4.3.2-1ubuntu0.1~esm2","4.3.2-1ubuntu0.1~esm3"],"ecosystem_specific":{"binaries":[{"binary_name":"tcpreplay","binary_version":"4.3.2-1ubuntu0.1~esm3"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-18976.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]}