{"id":"UBUNTU-CVE-2020-13987","details":"An issue was discovered in Contiki through 3.0. An Out-of-Bounds Read vulnerability exists in the uIP TCP/IP Stack component when calculating the checksums for IP packets in upper_layer_chksum in net/ipv4/uip.c.","modified":"2026-02-04T03:38:32.743282Z","published":"2020-12-01T00:00:00Z","related":["USN-6259-1"],"upstream":["CVE-2020-13987"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-13987"},{"type":"REPORT","url":"https://github.com/open-iscsi/open-iscsi/security/advisories/GHSA-r278-fm99-8rgp"},{"type":"REPORT","url":"https://www.forescout.com/company/resources/amnesia33-how-tcp-ip-stacks-breed-critical-vulnerabilities-in-iot-ot-and-it-devices/"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-6259-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2020-13987"}],"affected":[{"package":{"name":"open-iscsi","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/open-iscsi@2.0.873+git0.3b4b4500-14ubuntu3.7+esm1?arch=source&distro=esm-infra/xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0.873+git0.3b4b4500-14ubuntu3.7+esm1"}]}],"versions":["2.0.873-3ubuntu13","2.0.873+git0.3b4b4500-13ubuntu3","2.0.873+git0.3b4b4500-14ubuntu1","2.0.873+git0.3b4b4500-14ubuntu3","2.0.873+git0.3b4b4500-14ubuntu3.1","2.0.873+git0.3b4b4500-14ubuntu3.2","2.0.873+git0.3b4b4500-14ubuntu3.3","2.0.873+git0.3b4b4500-14ubuntu3.4","2.0.873+git0.3b4b4500-14ubuntu3.5","2.0.873+git0.3b4b4500-14ubuntu3.6","2.0.873+git0.3b4b4500-14ubuntu3.7"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro","binaries":[{"binary_name":"open-iscsi","binary_version":"2.0.873+git0.3b4b4500-14ubuntu3.7+esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-13987.json"}},{"package":{"name":"open-iscsi","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/open-iscsi@2.0.874-5ubuntu2.11+esm1?arch=source&distro=esm-infra/bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0.874-5ubuntu2.11+esm1"}]}],"versions":["2.0.874-4ubuntu3","2.0.874-4ubuntu4","2.0.874-4ubuntu5","2.0.874-5ubuntu1","2.0.874-5ubuntu2","2.0.874-5ubuntu2.1","2.0.874-5ubuntu2.2","2.0.874-5ubuntu2.3","2.0.874-5ubuntu2.4","2.0.874-5ubuntu2.6","2.0.874-5ubuntu2.7","2.0.874-5ubuntu2.9","2.0.874-5ubuntu2.10","2.0.874-5ubuntu2.11"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro","binaries":[{"binary_name":"iscsiuio","binary_version":"2.0.874-5ubuntu2.11+esm1"},{"binary_name":"open-iscsi","binary_version":"2.0.874-5ubuntu2.11+esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-13987.json"}},{"package":{"name":"open-iscsi","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/open-iscsi@2.0.874-7.1ubuntu6.4?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0.874-7.1ubuntu6.4"}]}],"versions":["2.0.874-7.1ubuntu3","2.0.874-7.1ubuntu5","2.0.874-7.1ubuntu6","2.0.874-7.1ubuntu6.1","2.0.874-7.1ubuntu6.2","2.0.874-7.1ubuntu6.3"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"iscsiuio","binary_version":"2.0.874-7.1ubuntu6.4"},{"binary_name":"open-iscsi","binary_version":"2.0.874-7.1ubuntu6.4"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-13987.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":"low"}]}