{"id":"UBUNTU-CVE-2018-18827","details":"There exists a heap-based buffer over-read in ff_vc1_pred_dc in vc1_block.c in Libav 12.3, which allows attackers to cause a denial-of-service via a crafted aac file.","modified":"2026-05-29T10:45:16.353450527Z","published":"2018-10-30T06:29:00Z","upstream":["CVE-2018-18827"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2018-18827"},{"type":"REPORT","url":"https://bugzilla.libav.org/show_bug.cgi?id=1135"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2018-18827"}],"affected":[{"package":{"name":"gst-libav1.0","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/gst-libav1.0?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.6.0-1","1.6.0-2","1.6.1-1","1.6.2-1","1.7.1-1","1.7.2-1","1.7.90-1","1.8.0-1","1.8.1-1~ubuntu1","1.8.2-1~ubuntu1","1.8.3-1ubuntu0.1","1.8.3-1ubuntu0.2"],"ecosystem_specific":{"binaries":[{"binary_name":"gstreamer1.0-libav","binary_version":"1.8.3-1ubuntu0.2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-18827.json"}},{"package":{"name":"gst-libav1.0","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/gst-libav1.0?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.12.2-1","1.12.3-1","1.12.4-1","1.13.91-1","1.14.0-1","1.14.1-1~ubuntu18.04.1","1.14.4-0ubuntu1~ubuntu18.04.1","1.14.5-0ubuntu1~18.04.1"],"ecosystem_specific":{"binaries":[{"binary_name":"gstreamer1.0-libav","binary_version":"1.14.5-0ubuntu1~18.04.1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-18827.json"}},{"package":{"name":"qtwebengine-opensource-src","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/qtwebengine-opensource-src?arch=source&distro=esm-apps%2Fbionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.9.1+dfsg-4","5.9.1+dfsg-4ubuntu1","5.9.2+dfsg-2ubuntu1","5.9.3+dfsg-0ubuntu1","5.9.4+dfsg-0ubuntu1","5.9.5+dfsg-0ubuntu2","5.9.5+dfsg-0ubuntu2+esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"libqt5webengine-data","binary_version":"5.9.5+dfsg-0ubuntu2+esm1"},{"binary_name":"libqt5webengine5","binary_version":"5.9.5+dfsg-0ubuntu2+esm1"},{"binary_name":"libqt5webenginecore5","binary_version":"5.9.5+dfsg-0ubuntu2+esm1"},{"binary_name":"libqt5webenginewidgets5","binary_version":"5.9.5+dfsg-0ubuntu2+esm1"},{"binary_name":"qml-module-qtwebengine","binary_version":"5.9.5+dfsg-0ubuntu2+esm1"},{"binary_name":"qtwebengine5-dev-tools","binary_version":"5.9.5+dfsg-0ubuntu2+esm1"},{"binary_name":"qtwebengine5-doc-html","binary_version":"5.9.5+dfsg-0ubuntu2+esm1"},{"binary_name":"qtwebengine5-examples","binary_version":"5.9.5+dfsg-0ubuntu2+esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-18827.json"}},{"package":{"name":"gst-libav1.0","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/gst-libav1.0?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.16.1-1","1.16.2-1","1.16.2-2"],"ecosystem_specific":{"binaries":[{"binary_name":"gstreamer1.0-libav","binary_version":"1.16.2-2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-18827.json"}},{"package":{"name":"qtwebengine-opensource-src","ecosystem":"Ubuntu:Pro:20.04:LTS","purl":"pkg:deb/ubuntu/qtwebengine-opensource-src?arch=source&distro=esm-apps%2Ffocal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.12.4+dfsg-1ubuntu1","5.12.4+dfsg-1ubuntu3","5.12.5+dfsg-3ubuntu1","5.12.5+dfsg-6ubuntu2","5.12.5+dfsg-7","5.12.5+dfsg-7build1","5.12.8+dfsg-0ubuntu1","5.12.8+dfsg-0ubuntu1.1","5.12.8+dfsg-0ubuntu1.1+esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"libqt5webengine-data","binary_version":"5.12.8+dfsg-0ubuntu1.1+esm1"},{"binary_name":"libqt5webengine5","binary_version":"5.12.8+dfsg-0ubuntu1.1+esm1"},{"binary_name":"libqt5webenginecore5","binary_version":"5.12.8+dfsg-0ubuntu1.1+esm1"},{"binary_name":"libqt5webenginewidgets5","binary_version":"5.12.8+dfsg-0ubuntu1.1+esm1"},{"binary_name":"qml-module-qtwebengine","binary_version":"5.12.8+dfsg-0ubuntu1.1+esm1"},{"binary_name":"qtwebengine5-dev-tools","binary_version":"5.12.8+dfsg-0ubuntu1.1+esm1"},{"binary_name":"qtwebengine5-doc-html","binary_version":"5.12.8+dfsg-0ubuntu1.1+esm1"},{"binary_name":"qtwebengine5-examples","binary_version":"5.12.8+dfsg-0ubuntu1.1+esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-18827.json"}},{"package":{"name":"gst-libav1.0","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/gst-libav1.0?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.18.5-1","1.20.0-1","1.20.1-1","1.20.3-0ubuntu1"],"ecosystem_specific":{"binaries":[{"binary_name":"gstreamer1.0-libav","binary_version":"1.20.3-0ubuntu1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-18827.json"}},{"package":{"name":"qtwebengine-opensource-src","ecosystem":"Ubuntu:Pro:22.04:LTS","purl":"pkg:deb/ubuntu/qtwebengine-opensource-src?arch=source&distro=esm-apps%2Fjammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.15.6+dfsg-1","5.15.6+dfsg-2","5.15.7+dfsg-2","5.15.8+dfsg-1","5.15.8+dfsg-1build1","5.15.8+dfsg-1build2","5.15.8+dfsg-2","5.15.9+dfsg-1","5.15.9+dfsg-1ubuntu0.1~esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"libqt5pdf5","binary_version":"5.15.9+dfsg-1ubuntu0.1~esm1"},{"binary_name":"libqt5pdfwidgets5","binary_version":"5.15.9+dfsg-1ubuntu0.1~esm1"},{"binary_name":"libqt5webengine-data","binary_version":"5.15.9+dfsg-1ubuntu0.1~esm1"},{"binary_name":"libqt5webengine5","binary_version":"5.15.9+dfsg-1ubuntu0.1~esm1"},{"binary_name":"libqt5webenginecore5","binary_version":"5.15.9+dfsg-1ubuntu0.1~esm1"},{"binary_name":"libqt5webenginewidgets5","binary_version":"5.15.9+dfsg-1ubuntu0.1~esm1"},{"binary_name":"qml-module-qtquick-pdf","binary_version":"5.15.9+dfsg-1ubuntu0.1~esm1"},{"binary_name":"qml-module-qtwebengine","binary_version":"5.15.9+dfsg-1ubuntu0.1~esm1"},{"binary_name":"qt5-image-formats-plugin-pdf","binary_version":"5.15.9+dfsg-1ubuntu0.1~esm1"},{"binary_name":"qtpdf5-doc-html","binary_version":"5.15.9+dfsg-1ubuntu0.1~esm1"},{"binary_name":"qtpdf5-examples","binary_version":"5.15.9+dfsg-1ubuntu0.1~esm1"},{"binary_name":"qtwebengine5-dev-tools","binary_version":"5.15.9+dfsg-1ubuntu0.1~esm1"},{"binary_name":"qtwebengine5-doc-html","binary_version":"5.15.9+dfsg-1ubuntu0.1~esm1"},{"binary_name":"qtwebengine5-examples","binary_version":"5.15.9+dfsg-1ubuntu0.1~esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-18827.json"}},{"package":{"name":"gst-libav1.0","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/gst-libav1.0?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.22.5-1","1.22.6-1","1.22.7-1","1.22.8-1","1.22.10-1","1.24.1-1","1.24.1-1build1"],"ecosystem_specific":{"binaries":[{"binary_name":"gstreamer1.0-libav","binary_version":"1.24.1-1build1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-18827.json"}},{"package":{"name":"qtwebengine-opensource-src","ecosystem":"Ubuntu:Pro:24.04:LTS","purl":"pkg:deb/ubuntu/qtwebengine-opensource-src?arch=source&distro=esm-apps%2Fnoble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.15.15+dfsg-2","5.15.15+dfsg-2build2","5.15.15+dfsg-2ubuntu1","5.15.16+dfsg-1","5.15.16+dfsg-1ubuntu2","5.15.16+dfsg-1ubuntu4","5.15.16+dfsg-3","5.15.16+dfsg-3ubuntu0.1~esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"libqt5pdf5","binary_version":"5.15.16+dfsg-3ubuntu0.1~esm1"},{"binary_name":"libqt5pdfwidgets5","binary_version":"5.15.16+dfsg-3ubuntu0.1~esm1"},{"binary_name":"libqt5webengine-data","binary_version":"5.15.16+dfsg-3ubuntu0.1~esm1"},{"binary_name":"libqt5webengine5","binary_version":"5.15.16+dfsg-3ubuntu0.1~esm1"},{"binary_name":"libqt5webenginecore5","binary_version":"5.15.16+dfsg-3ubuntu0.1~esm1"},{"binary_name":"libqt5webenginewidgets5","binary_version":"5.15.16+dfsg-3ubuntu0.1~esm1"},{"binary_name":"qml-module-qtquick-pdf","binary_version":"5.15.16+dfsg-3ubuntu0.1~esm1"},{"binary_name":"qml-module-qtwebengine","binary_version":"5.15.16+dfsg-3ubuntu0.1~esm1"},{"binary_name":"qt5-image-formats-plugin-pdf","binary_version":"5.15.16+dfsg-3ubuntu0.1~esm1"},{"binary_name":"qtpdf5-doc-html","binary_version":"5.15.16+dfsg-3ubuntu0.1~esm1"},{"binary_name":"qtpdf5-examples","binary_version":"5.15.16+dfsg-3ubuntu0.1~esm1"},{"binary_name":"qtwebengine5-dev-tools","binary_version":"5.15.16+dfsg-3ubuntu0.1~esm1"},{"binary_name":"qtwebengine5-doc-html","binary_version":"5.15.16+dfsg-3ubuntu0.1~esm1"},{"binary_name":"qtwebengine5-examples","binary_version":"5.15.16+dfsg-3ubuntu0.1~esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-18827.json"}},{"package":{"name":"gst-libav1.0","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/gst-libav1.0?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.26.0-1","1.26.1-1","1.26.2-1","1.26.3-1","1.26.4-1","1.26.5-1","1.26.6-1"],"ecosystem_specific":{"binaries":[{"binary_name":"gstreamer1.0-libav","binary_version":"1.26.6-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-18827.json"}},{"package":{"name":"qtwebengine-opensource-src","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/qtwebengine-opensource-src?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.15.18+dfsg-2","5.15.18+dfsg-2build1","5.15.19+dfsg-1","5.15.19+dfsg2-1"],"ecosystem_specific":{"binaries":[{"binary_name":"libqt5pdf5","binary_version":"5.15.19+dfsg2-1"},{"binary_name":"libqt5pdfwidgets5","binary_version":"5.15.19+dfsg2-1"},{"binary_name":"libqt5webengine-data","binary_version":"5.15.19+dfsg2-1"},{"binary_name":"libqt5webengine5","binary_version":"5.15.19+dfsg2-1"},{"binary_name":"libqt5webenginecore5","binary_version":"5.15.19+dfsg2-1"},{"binary_name":"libqt5webenginewidgets5","binary_version":"5.15.19+dfsg2-1"},{"binary_name":"qml-module-qtquick-pdf","binary_version":"5.15.19+dfsg2-1"},{"binary_name":"qml-module-qtwebengine","binary_version":"5.15.19+dfsg2-1"},{"binary_name":"qt5-image-formats-plugin-pdf","binary_version":"5.15.19+dfsg2-1"},{"binary_name":"qtpdf5-doc-html","binary_version":"5.15.19+dfsg2-1"},{"binary_name":"qtpdf5-examples","binary_version":"5.15.19+dfsg2-1"},{"binary_name":"qtwebengine5-dev-tools","binary_version":"5.15.19+dfsg2-1"},{"binary_name":"qtwebengine5-doc-html","binary_version":"5.15.19+dfsg2-1"},{"binary_name":"qtwebengine5-examples","binary_version":"5.15.19+dfsg2-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-18827.json"}},{"package":{"name":"gst-libav1.0","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/gst-libav1.0?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.26.6-1","1.27.2-1","1.27.2-1build1","1.27.90-1","1.28.0-1","1.28.1-1","1.28.2-1"],"ecosystem_specific":{"binaries":[{"binary_name":"gstreamer1.0-libav","binary_version":"1.28.2-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-18827.json"}},{"package":{"name":"qtwebengine-opensource-src","ecosystem":"Ubuntu:Pro:26.04:LTS","purl":"pkg:deb/ubuntu/qtwebengine-opensource-src?arch=source&distro=esm-apps%2Fresolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.15.19+dfsg2-1","5.15.19+dfsg2-1build1","5.15.19+dfsg2-2","5.15.19+dfsg2-3","5.15.19+dfsg2-4","5.15.19+dfsg2-4ubuntu0.1~esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"libqt5webengine-data","binary_version":"5.15.19+dfsg2-4ubuntu0.1~esm1"},{"binary_name":"libqt5webengine5","binary_version":"5.15.19+dfsg2-4ubuntu0.1~esm1"},{"binary_name":"libqt5webenginecore5","binary_version":"5.15.19+dfsg2-4ubuntu0.1~esm1"},{"binary_name":"libqt5webenginewidgets5","binary_version":"5.15.19+dfsg2-4ubuntu0.1~esm1"},{"binary_name":"qml-module-qtwebengine","binary_version":"5.15.19+dfsg2-4ubuntu0.1~esm1"},{"binary_name":"qtwebengine5-dev-tools","binary_version":"5.15.19+dfsg2-4ubuntu0.1~esm1"},{"binary_name":"qtwebengine5-doc-html","binary_version":"5.15.19+dfsg2-4ubuntu0.1~esm1"},{"binary_name":"qtwebengine5-examples","binary_version":"5.15.19+dfsg2-4ubuntu0.1~esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-18827.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]}