{"id":"UBUNTU-CVE-2020-25862","details":"In Wireshark 3.2.0 to 3.2.6, 3.0.0 to 3.0.13, and 2.6.0 to 2.6.20, the TCP dissector could crash. This was addressed in epan/dissectors/packet-tcp.c by changing the handling of the invalid 0xFFFF checksum.","modified":"2026-02-04T02:32:23.883306Z","published":"2020-10-06T15:15:00Z","related":["USN-6262-1"],"upstream":["CVE-2020-25862"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-25862"},{"type":"REPORT","url":"https://www.wireshark.org/security/wnpa-sec-2020-12.html"},{"type":"REPORT","url":"https://gitlab.com/wireshark/wireshark/-/issues/16816"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-6262-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2020-25862"}],"affected":[{"package":{"name":"wireshark","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/wireshark@2.6.10-1~ubuntu14.04.0~esm2?arch=source&distro=trusty/esm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.6.10-1~ubuntu14.04.0~esm2"}]}],"versions":["1.10.2-1","1.10.3-1","1.10.5-1ubuntu1","1.10.5-2","1.10.6-1","1.12.1+g01b65bf-4+deb8u11ubuntu0.14.04.1","2.6.3-1~ubuntu14.04.1","2.6.4-2~ubuntu14.04.1","2.6.5-1~ubuntu14.04.1","2.6.6-1~ubuntu14.04.0","2.6.8-1~ubuntu14.04.0~esm1","2.6.10-1~ubuntu14.04.0~esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"libwireshark-data","binary_version":"2.6.10-1~ubuntu14.04.0~esm2"},{"binary_name":"libwireshark-dev","binary_version":"2.6.10-1~ubuntu14.04.0~esm2"},{"binary_name":"libwireshark11","binary_version":"2.6.10-1~ubuntu14.04.0~esm2"},{"binary_name":"libwiretap-dev","binary_version":"2.6.10-1~ubuntu14.04.0~esm2"},{"binary_name":"libwiretap8","binary_version":"2.6.10-1~ubuntu14.04.0~esm2"},{"binary_name":"libwscodecs2","binary_version":"2.6.10-1~ubuntu14.04.0~esm2"},{"binary_name":"libwsutil-dev","binary_version":"2.6.10-1~ubuntu14.04.0~esm2"},{"binary_name":"libwsutil9","binary_version":"2.6.10-1~ubuntu14.04.0~esm2"},{"binary_name":"tshark","binary_version":"2.6.10-1~ubuntu14.04.0~esm2"},{"binary_name":"wireshark","binary_version":"2.6.10-1~ubuntu14.04.0~esm2"},{"binary_name":"wireshark-common","binary_version":"2.6.10-1~ubuntu14.04.0~esm2"},{"binary_name":"wireshark-dev","binary_version":"2.6.10-1~ubuntu14.04.0~esm2"},{"binary_name":"wireshark-gtk","binary_version":"2.6.10-1~ubuntu14.04.0~esm2"},{"binary_name":"wireshark-qt","binary_version":"2.6.10-1~ubuntu14.04.0~esm2"}],"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-25862.json"}},{"package":{"name":"wireshark","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/wireshark@2.6.10-1~ubuntu16.04.0+esm1?arch=source&distro=esm-apps/xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.6.10-1~ubuntu16.04.0+esm1"}]}],"versions":["1.12.7+g7fc8978-1","1.12.8+g5b6e543-2","2.0.1+g59ea380-3build1","2.0.2+ga16e22e-1","2.2.6+g32dac6a-2ubuntu0.16.04","2.6.3-1~ubuntu16.04.1","2.6.4-2~ubuntu16.04.0","2.6.5-1~ubuntu16.04.0","2.6.6-1~ubuntu16.04.0","2.6.8-1~ubuntu16.04.0","2.6.10-1~ubuntu16.04.0"],"ecosystem_specific":{"binaries":[{"binary_name":"libwireshark-data","binary_version":"2.6.10-1~ubuntu16.04.0+esm1"},{"binary_name":"libwireshark-dev","binary_version":"2.6.10-1~ubuntu16.04.0+esm1"},{"binary_name":"libwireshark11","binary_version":"2.6.10-1~ubuntu16.04.0+esm1"},{"binary_name":"libwiretap-dev","binary_version":"2.6.10-1~ubuntu16.04.0+esm1"},{"binary_name":"libwiretap8","binary_version":"2.6.10-1~ubuntu16.04.0+esm1"},{"binary_name":"libwscodecs2","binary_version":"2.6.10-1~ubuntu16.04.0+esm1"},{"binary_name":"libwsutil-dev","binary_version":"2.6.10-1~ubuntu16.04.0+esm1"},{"binary_name":"libwsutil9","binary_version":"2.6.10-1~ubuntu16.04.0+esm1"},{"binary_name":"tshark","binary_version":"2.6.10-1~ubuntu16.04.0+esm1"},{"binary_name":"wireshark","binary_version":"2.6.10-1~ubuntu16.04.0+esm1"},{"binary_name":"wireshark-common","binary_version":"2.6.10-1~ubuntu16.04.0+esm1"},{"binary_name":"wireshark-dev","binary_version":"2.6.10-1~ubuntu16.04.0+esm1"},{"binary_name":"wireshark-gtk","binary_version":"2.6.10-1~ubuntu16.04.0+esm1"},{"binary_name":"wireshark-qt","binary_version":"2.6.10-1~ubuntu16.04.0+esm1"}],"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-25862.json"}},{"package":{"name":"wireshark","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/wireshark@2.6.10-1~ubuntu18.04.0+esm1?arch=source&distro=esm-apps/bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.6.10-1~ubuntu18.04.0+esm1"}]}],"versions":["2.4.2-1","2.4.3-1","2.4.4-1","2.4.5-1","2.6.3-1~ubuntu18.04.1","2.6.4-2~ubuntu18.04.0","2.6.5-1~ubuntu18.04.0","2.6.6-1~ubuntu18.04.0","2.6.8-1~ubuntu18.04.0","2.6.10-1~ubuntu18.04.0"],"ecosystem_specific":{"binaries":[{"binary_name":"libwireshark-data","binary_version":"2.6.10-1~ubuntu18.04.0+esm1"},{"binary_name":"libwireshark-dev","binary_version":"2.6.10-1~ubuntu18.04.0+esm1"},{"binary_name":"libwireshark11","binary_version":"2.6.10-1~ubuntu18.04.0+esm1"},{"binary_name":"libwiretap-dev","binary_version":"2.6.10-1~ubuntu18.04.0+esm1"},{"binary_name":"libwiretap8","binary_version":"2.6.10-1~ubuntu18.04.0+esm1"},{"binary_name":"libwscodecs2","binary_version":"2.6.10-1~ubuntu18.04.0+esm1"},{"binary_name":"libwsutil-dev","binary_version":"2.6.10-1~ubuntu18.04.0+esm1"},{"binary_name":"libwsutil9","binary_version":"2.6.10-1~ubuntu18.04.0+esm1"},{"binary_name":"tshark","binary_version":"2.6.10-1~ubuntu18.04.0+esm1"},{"binary_name":"wireshark","binary_version":"2.6.10-1~ubuntu18.04.0+esm1"},{"binary_name":"wireshark-common","binary_version":"2.6.10-1~ubuntu18.04.0+esm1"},{"binary_name":"wireshark-dev","binary_version":"2.6.10-1~ubuntu18.04.0+esm1"},{"binary_name":"wireshark-gtk","binary_version":"2.6.10-1~ubuntu18.04.0+esm1"},{"binary_name":"wireshark-qt","binary_version":"2.6.10-1~ubuntu18.04.0+esm1"}],"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-25862.json"}},{"package":{"name":"wireshark","ecosystem":"Ubuntu:Pro:20.04:LTS","purl":"pkg:deb/ubuntu/wireshark@3.2.3-1ubuntu0.1~esm1?arch=source&distro=esm-apps/focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.2.3-1ubuntu0.1~esm1"}]}],"versions":["3.0.5-1","3.0.7-1","3.2.1-1","3.2.2-1","3.2.3-1"],"ecosystem_specific":{"binaries":[{"binary_name":"libwireshark-data","binary_version":"3.2.3-1ubuntu0.1~esm1"},{"binary_name":"libwireshark-dev","binary_version":"3.2.3-1ubuntu0.1~esm1"},{"binary_name":"libwireshark13","binary_version":"3.2.3-1ubuntu0.1~esm1"},{"binary_name":"libwiretap-dev","binary_version":"3.2.3-1ubuntu0.1~esm1"},{"binary_name":"libwiretap10","binary_version":"3.2.3-1ubuntu0.1~esm1"},{"binary_name":"libwsutil-dev","binary_version":"3.2.3-1ubuntu0.1~esm1"},{"binary_name":"libwsutil11","binary_version":"3.2.3-1ubuntu0.1~esm1"},{"binary_name":"tshark","binary_version":"3.2.3-1ubuntu0.1~esm1"},{"binary_name":"wireshark","binary_version":"3.2.3-1ubuntu0.1~esm1"},{"binary_name":"wireshark-common","binary_version":"3.2.3-1ubuntu0.1~esm1"},{"binary_name":"wireshark-dev","binary_version":"3.2.3-1ubuntu0.1~esm1"},{"binary_name":"wireshark-gtk","binary_version":"3.2.3-1ubuntu0.1~esm1"},{"binary_name":"wireshark-qt","binary_version":"3.2.3-1ubuntu0.1~esm1"}],"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-25862.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]}