{"id":"UBUNTU-CVE-2020-24977","details":"GNOME project libxml2 v2.9.10 has a global buffer over-read vulnerability in xmlEncodeEntitiesInternal at libxml2/entities.c. The issue has been fixed in commit 50f06b3e.","modified":"2026-01-30T01:23:23.383059Z","published":"2020-09-04T00:15:00Z","related":["USN-4991-1"],"upstream":["CVE-2020-24977"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-24977"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-4991-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2020-24977"}],"affected":[{"package":{"name":"libxml2","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/libxml2@2.9.1+dfsg1-3ubuntu4.13+esm2?arch=source&distro=trusty/esm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.9.1+dfsg1-3ubuntu4.13+esm2"}]}],"versions":["2.9.1+dfsg1-3ubuntu2","2.9.1+dfsg1-3ubuntu3","2.9.1+dfsg1-3ubuntu4","2.9.1+dfsg1-3ubuntu4.1","2.9.1+dfsg1-3ubuntu4.2","2.9.1+dfsg1-3ubuntu4.3","2.9.1+dfsg1-3ubuntu4.4","2.9.1+dfsg1-3ubuntu4.5","2.9.1+dfsg1-3ubuntu4.6","2.9.1+dfsg1-3ubuntu4.7","2.9.1+dfsg1-3ubuntu4.8","2.9.1+dfsg1-3ubuntu4.9","2.9.1+dfsg1-3ubuntu4.10","2.9.1+dfsg1-3ubuntu4.11","2.9.1+dfsg1-3ubuntu4.12","2.9.1+dfsg1-3ubuntu4.13","2.9.1+dfsg1-3ubuntu4.13+esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"libxml2","binary_version":"2.9.1+dfsg1-3ubuntu4.13+esm2"},{"binary_name":"libxml2-dev","binary_version":"2.9.1+dfsg1-3ubuntu4.13+esm2"},{"binary_name":"libxml2-utils","binary_version":"2.9.1+dfsg1-3ubuntu4.13+esm2"},{"binary_name":"python-libxml2","binary_version":"2.9.1+dfsg1-3ubuntu4.13+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-2020-24977.json"}},{"package":{"name":"libxml2","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/libxml2@2.9.3+dfsg1-1ubuntu0.7+esm1?arch=source&distro=esm-infra/xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.9.3+dfsg1-1ubuntu0.7+esm1"}]}],"versions":["2.9.2+zdfsg1-4","2.9.2+zdfsg1-4ubuntu1","2.9.2+zdfsg1-4ubuntu2","2.9.2+zdfsg1-4ubuntu3","2.9.3+dfsg1-1","2.9.3+dfsg1-1ubuntu0.1","2.9.3+dfsg1-1ubuntu0.2","2.9.3+dfsg1-1ubuntu0.3","2.9.3+dfsg1-1ubuntu0.4","2.9.3+dfsg1-1ubuntu0.5","2.9.3+dfsg1-1ubuntu0.6","2.9.3+dfsg1-1ubuntu0.7"],"ecosystem_specific":{"binaries":[{"binary_name":"libxml2","binary_version":"2.9.3+dfsg1-1ubuntu0.7+esm1"},{"binary_name":"libxml2-dev","binary_version":"2.9.3+dfsg1-1ubuntu0.7+esm1"},{"binary_name":"libxml2-utils","binary_version":"2.9.3+dfsg1-1ubuntu0.7+esm1"},{"binary_name":"python-libxml2","binary_version":"2.9.3+dfsg1-1ubuntu0.7+esm1"}],"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-2020-24977.json"}},{"package":{"name":"libxml2","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/libxml2@2.9.4+dfsg1-6.1ubuntu1.4?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.9.4+dfsg1-6.1ubuntu1.4"}]}],"versions":["2.9.4+dfsg1-4ubuntu1","2.9.4+dfsg1-5ubuntu1","2.9.4+dfsg1-5ubuntu2","2.9.4+dfsg1-5.1ubuntu1","2.9.4+dfsg1-5.2ubuntu1","2.9.4+dfsg1-6.1ubuntu1","2.9.4+dfsg1-6.1ubuntu1.2","2.9.4+dfsg1-6.1ubuntu1.3"],"ecosystem_specific":{"binaries":[{"binary_name":"libxml2","binary_version":"2.9.4+dfsg1-6.1ubuntu1.4"},{"binary_name":"libxml2-dev","binary_version":"2.9.4+dfsg1-6.1ubuntu1.4"},{"binary_name":"libxml2-utils","binary_version":"2.9.4+dfsg1-6.1ubuntu1.4"},{"binary_name":"python-libxml2","binary_version":"2.9.4+dfsg1-6.1ubuntu1.4"},{"binary_name":"python3-libxml2","binary_version":"2.9.4+dfsg1-6.1ubuntu1.4"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-24977.json"}},{"package":{"name":"libxml2","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/libxml2@2.9.10+dfsg-5ubuntu0.20.04.1?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.9.10+dfsg-5ubuntu0.20.04.1"}]}],"versions":["2.9.4+dfsg1-7ubuntu3","2.9.4+dfsg1-7ubuntu5","2.9.4+dfsg1-8ubuntu1","2.9.4+dfsg1-8ubuntu2","2.9.4+dfsg1-8ubuntu3","2.9.10+dfsg-1ubuntu3","2.9.10+dfsg-4build1","2.9.10+dfsg-5"],"ecosystem_specific":{"binaries":[{"binary_name":"libxml2","binary_version":"2.9.10+dfsg-5ubuntu0.20.04.1"},{"binary_name":"libxml2-dev","binary_version":"2.9.10+dfsg-5ubuntu0.20.04.1"},{"binary_name":"libxml2-utils","binary_version":"2.9.10+dfsg-5ubuntu0.20.04.1"},{"binary_name":"python-libxml2","binary_version":"2.9.10+dfsg-5ubuntu0.20.04.1"},{"binary_name":"python3-libxml2","binary_version":"2.9.10+dfsg-5ubuntu0.20.04.1"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-24977.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:L/I:N/A:L"},{"type":"Ubuntu","score":"low"}]}