{"id":"USN-3235-1","summary":"libxml2 vulnerabilities","details":"It was discovered that libxml2 incorrectly handled format strings. If a\nuser or automated system were tricked into opening a specially crafted\ndocument, an attacker could possibly cause libxml2 to crash, resulting in a\ndenial of service. This issue only affected Ubuntu 12.04 LTS, Ubuntu 14.04\nLTS, and Ubuntu 16.04 LTS. (CVE-2016-4448)\n\nIt was discovered that libxml2 incorrectly handled certain malformed\ndocuments. If a user or automated system were tricked into opening a\nspecially crafted document, an attacker could cause libxml2 to crash,\nresulting in a denial of service, or possibly execute arbitrary code.\n(CVE-2016-4658)\n\nNick Wellnhofer discovered that libxml2 incorrectly handled certain\nmalformed documents. If a user or automated system were tricked into\nopening a specially crafted document, an attacker could cause libxml2 to\ncrash, resulting in a denial of service, or possibly execute arbitrary\ncode. (CVE-2016-5131)\n","modified":"2026-02-10T04:41:06Z","published":"2017-03-16T11:46:37Z","related":["UBUNTU-CVE-2016-4448","UBUNTU-CVE-2016-4658","UBUNTU-CVE-2016-5131"],"upstream":["CVE-2016-4448","CVE-2016-4658","CVE-2016-5131","UBUNTU-CVE-2016-4448","UBUNTU-CVE-2016-4658","UBUNTU-CVE-2016-5131"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-3235-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2016-4448"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2016-4658"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2016-5131"}],"affected":[{"package":{"name":"libxml2","ecosystem":"Ubuntu:14.04:LTS","purl":"pkg:deb/ubuntu/libxml2@2.9.1+dfsg1-3ubuntu4.9?arch=source&distro=trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.9.1+dfsg1-3ubuntu4.9"}]}],"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"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"libxml2","binary_version":"2.9.1+dfsg1-3ubuntu4.9"},{"binary_name":"libxml2-dev","binary_version":"2.9.1+dfsg1-3ubuntu4.9"},{"binary_name":"libxml2-utils","binary_version":"2.9.1+dfsg1-3ubuntu4.9"},{"binary_name":"python-libxml2","binary_version":"2.9.1+dfsg1-3ubuntu4.9"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-3235-1.json","cves_map":{"cves":[{"severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"low","type":"Ubuntu"}],"id":"CVE-2016-4448"},{"severity":[{"score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2016-4658"},{"severity":[{"score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2016-5131"}],"ecosystem":"Ubuntu:14.04:LTS"}}},{"package":{"name":"libxml2","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/libxml2@2.9.3+dfsg1-1ubuntu0.2?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.9.3+dfsg1-1ubuntu0.2"}]}],"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"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"libxml2","binary_version":"2.9.3+dfsg1-1ubuntu0.2"},{"binary_name":"libxml2-dev","binary_version":"2.9.3+dfsg1-1ubuntu0.2"},{"binary_name":"libxml2-utils","binary_version":"2.9.3+dfsg1-1ubuntu0.2"},{"binary_name":"python-libxml2","binary_version":"2.9.3+dfsg1-1ubuntu0.2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-3235-1.json","cves_map":{"cves":[{"severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"low","type":"Ubuntu"}],"id":"CVE-2016-4448"},{"severity":[{"score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2016-4658"},{"severity":[{"score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2016-5131"}],"ecosystem":"Ubuntu:16.04:LTS"}}}],"schema_version":"1.7.3"}