{"id":"CVE-2020-37011","aliases":["DEBIAN-CVE-2020-37011","EUVD-2020-30906","GHSA-v6ph-6g9p-25rc","UBUNTU-CVE-2020-37011"],"status":"published","title":"Gnome Fonts Viewer 3.34.0 Heap Corruption","description":"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.","severity":{"version":"4.0","score":8.4,"vector":"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","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00446,"percentile":0.39133,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-787"],"published":"2026-01-29T14:28:31Z","modified":"2026-10-28T20:15:29Z","affected":[{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"gnome-font-viewer","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.16.2-1","3.16.2-1build1","3.16.2-1ubuntu1"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"gnome-font-viewer","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"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"gnome-font-viewer","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.34.0-1","3.34.0-2"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"gnome-font-viewer","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["41.0-1","41.0-2"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"gnome-font-viewer","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["45.0-1","45.0-1build1","46.0-1","46.0-1build1"]},{"source":"osv","ecosystem":"Ubuntu:25.10","package":"gnome-font-viewer","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["48.0-1","48.0-2"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"gnome-font-viewer","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["49.0-1","50.0-1","50.0-2"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"gnome-font-viewer","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["48.0-2","49.0-1"]}],"products":[{"vendor":"gnome","product":"fonts viewer"}],"references":[{"url":"https://www.exploit-db.com/exploits/48803","tags":["exploit","report"]},{"url":"https://help.gnome.org/","tags":["product"]},{"url":"https://apps.gnome.org/FontViewer/","tags":["product","report"]},{"url":"https://www.vulncheck.com/advisories/gnome-fonts-viewer-heap-corruption","tags":["third-party-advisory","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-37011"},{"url":"https://apps.gnome.org/FontViewer"},{"url":"https://help.gnome.org"},{"url":"https://github.com/advisories/GHSA-v6ph-6g9p-25rc"},{"url":"https://security-tracker.debian.org/tracker/CVE-2020-37011","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2020-37011","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2020-37011","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2020-37011","title":"Gnome Fonts Viewer 3.34.0 Heap Corruption","description":"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.","status":"published","published":"2026-01-29T14:28:31.241Z","modified":"2026-05-26T11:51:40.652Z","cvss":[{"version":"4.0","score":8.4,"vector":"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","level":"high","assessor":"cna"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-787"],"updated_at":"2026-11-02T14:35:47.22408Z"}],"euvd":[{"id":"EUVD-2020-30906","description":"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.","status":"published","published":"2026-01-29T14:28:31Z","modified":"2026-05-26T11:51:40Z","cvss":[{"version":"4.0","score":8.4,"vector":"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","level":"high"}],"updated_at":"2026-11-02T18:21:07.775399Z"}],"ghsa":[{"id":"GHSA-v6ph-6g9p-25rc","title":"Gnome Fonts Viewer 3.34.0 contains a heap corruption vulnerability that allows attackers to...","description":"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 cause an infinite malloc() loop and potentially crash the gnome-font-viewer process.","status":"published","published":"2026-01-29T15:30:28Z","modified":"2026-01-29T15:30:35Z","cvss":[{"version":"4.0","score":8.4,"vector":"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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-787"],"updated_at":"2026-11-02T15:05:58.473482Z"}],"nvd":[{"id":"CVE-2020-37011","description":"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.","status":"published","published":"2026-01-29T15:16:08.3Z","modified":"2026-06-17T03:16:45.107Z","cvss":[{"version":"4.0","score":8.4,"vector":"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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high","assessor":"secondary"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-787"],"updated_at":"2026-11-02T14:06:48.591569Z"}],"osv":[{"id":"DEBIAN-CVE-2020-37011","description":"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 cause an infinite malloc() loop and potentially crash the gnome-font-viewer process.","status":"withdrawn","published":"2026-01-29T15:16:08.3Z","modified":"2026-05-01T20:01:45.615962Z","cvss":[{"version":"4.0","score":8.4,"vector":"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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high"}],"updated_at":"2026-11-02T15:45:34.019707Z"},{"id":"UBUNTU-CVE-2020-37011","description":"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.","status":"published","published":"2026-01-29T15:16:00Z","modified":"2026-10-28T20:15:29.431856471Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"},{"version":"4.0","score":8.4,"vector":"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","level":"high"}],"updated_at":"2026-11-02T15:54:25.179924Z"}]}}