{"id":"UBUNTU-CVE-2019-18197","details":"In xsltCopyText in transform.c in libxslt 1.1.33, a pointer variable isn't reset under certain circumstances. If the relevant memory area happened to be freed and reused in a certain way, a bounds check could fail and memory outside a buffer could be written to, or uninitialized data could be disclosed.","modified":"2026-05-29T18:00:11.676308899Z","published":"2019-10-18T21:15:00Z","related":["USN-4164-1"],"upstream":["CVE-2019-18197"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2019-18197"},{"type":"REPORT","url":"https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=15746"},{"type":"REPORT","url":"https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=15768"},{"type":"REPORT","url":"https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=15914"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-4164-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2019-18197"}],"affected":[{"package":{"name":"libxslt","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/libxslt?arch=source&distro=trusty%2Fesm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.1.28-2ubuntu0.2+esm1"}]}],"versions":["1.1.28-2","1.1.28-2build1","1.1.28-2ubuntu0.1","1.1.28-2ubuntu0.2"],"ecosystem_specific":{"binaries":[{"binary_name":"libxslt1.1","binary_version":"1.1.28-2ubuntu0.2+esm1"},{"binary_version":"1.1.28-2ubuntu0.2+esm1","binary_name":"python-libxslt1"},{"binary_name":"xsltproc","binary_version":"1.1.28-2ubuntu0.2+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/2019/UBUNTU-CVE-2019-18197.json"}},{"package":{"name":"libxslt","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/libxslt?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.1.28-2.1ubuntu0.3"}]}],"versions":["1.1.28-2build2","1.1.28-2.1","1.1.28-2.1ubuntu0.1","1.1.28-2.1ubuntu0.2"],"ecosystem_specific":{"binaries":[{"binary_version":"1.1.28-2.1ubuntu0.3","binary_name":"libxslt1.1"},{"binary_name":"python-libxslt1","binary_version":"1.1.28-2.1ubuntu0.3"},{"binary_version":"1.1.28-2.1ubuntu0.3","binary_name":"xsltproc"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-18197.json"}},{"package":{"name":"libxslt","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/libxslt?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.1.29-5ubuntu0.2"}]}],"versions":["1.1.29-2.1ubuntu1","1.1.29-4","1.1.29-5","1.1.29-5ubuntu0.1"],"ecosystem_specific":{"binaries":[{"binary_version":"1.1.29-5ubuntu0.2","binary_name":"libxslt1.1"},{"binary_version":"1.1.29-5ubuntu0.2","binary_name":"python-libxslt1"},{"binary_name":"xsltproc","binary_version":"1.1.29-5ubuntu0.2"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-18197.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]}