{"id":"UBUNTU-CVE-2020-37011","details":"Gnome Fonts Viewer 3.34.0 contains a heap corruption vulnerability that allows attackers to trigger an out-of-bounds write by crafting a malicious TTF font file. Attackers can generate a specially crafted TTF file with an oversized pattern to exhaust memory through repeated malloc() calls and potentially crash the gnome-font-viewer process.","modified":"2026-09-16T14:00:55.870537388Z","published":"2026-01-29T15:16:00Z","upstream":["CVE-2020-37011"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-37011"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2020-37011"},{"type":"REPORT","url":"https://www.exploit-db.com/exploits/48803"},{"type":"REPORT","url":"https://apps.gnome.org/FontViewer/"},{"type":"REPORT","url":"https://www.vulncheck.com/advisories/gnome-fonts-viewer-heap-corruption"}],"affected":[{"package":{"name":"gnome-font-viewer","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/gnome-font-viewer?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.16.2-1","3.16.2-1build1","3.16.2-1ubuntu1"],"ecosystem_specific":{"binaries":[{"binary_version":"3.16.2-1ubuntu1","binary_name":"gnome-font-viewer"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-37011.json"}},{"package":{"name":"gnome-font-viewer","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/gnome-font-viewer?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.26.0-1","3.26.0-2","3.26.0-3","3.27.90-1","3.27.90-2","3.28.0-1"],"ecosystem_specific":{"binaries":[{"binary_name":"gnome-font-viewer","binary_version":"3.28.0-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-37011.json"}},{"package":{"name":"gnome-font-viewer","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/gnome-font-viewer?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.34.0-1","3.34.0-2"],"ecosystem_specific":{"binaries":[{"binary_name":"gnome-font-viewer","binary_version":"3.34.0-2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-37011.json"}},{"package":{"name":"gnome-font-viewer","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/gnome-font-viewer?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["41.0-1","41.0-2"],"ecosystem_specific":{"binaries":[{"binary_name":"gnome-font-viewer","binary_version":"41.0-2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-37011.json"}},{"package":{"name":"gnome-font-viewer","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/gnome-font-viewer?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["45.0-1","45.0-1build1","46.0-1","46.0-1build1"],"ecosystem_specific":{"binaries":[{"binary_name":"gnome-font-viewer","binary_version":"46.0-1build1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-37011.json"}},{"package":{"name":"gnome-font-viewer","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/gnome-font-viewer?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["48.0-1","48.0-2"],"ecosystem_specific":{"binaries":[{"binary_name":"gnome-font-viewer","binary_version":"48.0-2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-37011.json"}},{"package":{"name":"gnome-font-viewer","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/gnome-font-viewer?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["48.0-2","49.0-1"],"ecosystem_specific":{"binaries":[{"binary_version":"49.0-1","binary_name":"gnome-font-viewer"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-37011.json"}}],"schema_version":"1.9.0","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":"CVSS_V4","score":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"},{"type":"Ubuntu","score":"medium"}]}