{"id":"CVE-2021-27815","aliases":["DEBIAN-CVE-2021-27815","EUVD-2021-14555","GHSA-f35c-rqpm-6c5v","MGASA-2021-0252","UBUNTU-CVE-2021-27815"],"status":"published","title":"NULL Pointer Deference in the \"actions.c\" library of libexif exif v0.6.22 allows attackers to...","description":"NULL Pointer Deference in the exif command line tool, when printing out XML formatted EXIF data, in exif v0.6.22 and earlier allows attackers to cause a Denial of Service (DoS) by uploading a malicious JPEG file, causing the application to crash.","severity":{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-12","score":0.01268,"percentile":0.70186,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-476"],"published":"2021-04-14T00:00:00Z","modified":"2026-10-23T18:03:25Z","fixes":[{"ecosystem":"Debian:12","package":"exif","fixed_in":["0.6.22-3"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"exif","fixed_in":["0.6.22-3"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"exif","fixed_in":["0.6.22-3"],"sources":["osv"]},{"ecosystem":"Mageia:7","package":"exif","fixed_in":["0.6.22-1.1.mga7"],"sources":["osv"]},{"ecosystem":"Mageia:8","package":"exif","fixed_in":["0.6.22-1.1.mga8"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"exif","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.6.22-3"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"exif","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.6.22-3"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"exif","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.6.22-3"}]}]},{"source":"osv","ecosystem":"Mageia:7","package":"exif","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.6.22-1.1.mga7"}]}]},{"source":"osv","ecosystem":"Mageia:8","package":"exif","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.6.22-1.1.mga8"}]}]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"exif","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.6.22-2"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"exif","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.6.22-3","0.6.22-3build1"]},{"source":"osv","ecosystem":"Ubuntu:25.10","package":"exif","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.6.22-4"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"exif","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.6.22-4build1"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"exif","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.6.22-4","0.6.22-4build1"]}],"products":[{"vendor":"fedoraproject","product":"fedora"},{"vendor":"libexif_project","product":"exif"}],"references":[{"url":"https://github.com/libexif/exif/issues/4","tags":["x_transferred","Exploit","Third Party Advisory","evidence","report"]},{"url":"https://github.com/libexif/exif/commit/f6334d9d32437ef13dc902f0a88a2be0063d9d1c","tags":["x_transferred","Patch","Third Party Advisory","fix","report"]},{"url":"https://github.com/libexif/exif/commit/eb84b0e3c5f2a86013b6fcfb800d187896a648fa","tags":["x_transferred","Patch","Third Party Advisory","fix"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JSWAXZVNXYLV3E4R6YQTEGRGMGWEAR76/","tags":["vendor-advisory","x_transferred","web"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YZQ3L45F7S7PQPG5HEHXOCGNOO64MJOS/","tags":["vendor-advisory","x_transferred","web"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QMC6OTXZRPCUD3LOSWO4ISR7CH7NJQDT/","tags":["vendor-advisory","x_transferred","web"]},{"url":"https://security.gentoo.org/glsa/202210-28","tags":["vendor-advisory","x_transferred","Third Party Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-27815"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/JSWAXZVNXYLV3E4R6YQTEGRGMGWEAR76/"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QMC6OTXZRPCUD3LOSWO4ISR7CH7NJQDT/"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/YZQ3L45F7S7PQPG5HEHXOCGNOO64MJOS/"},{"url":"https://github.com/advisories/GHSA-f35c-rqpm-6c5v"},{"url":"https://security-tracker.debian.org/tracker/CVE-2021-27815","tags":["advisory"]},{"url":"https://advisories.mageia.org/MGASA-2021-0252.html","tags":["advisory"]},{"url":"https://bugs.mageia.org/show_bug.cgi?id=29038","tags":["report"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/thread/QMC6OTXZRPCUD3LOSWO4ISR7CH7NJQDT/","tags":["web"]},{"url":"https://ubuntu.com/security/CVE-2021-27815","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-27815","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2021-27815","description":"NULL Pointer Deference in the exif command line tool, when printing out XML formatted EXIF data, in exif v0.6.22 and earlier allows attackers to cause a Denial of Service (DoS) by uploading a malicious JPEG file, causing the application to crash.","status":"published","published":"2021-04-14T00:00:00Z","modified":"2024-08-03T21:33:15.89Z","updated_at":"2026-11-02T14:33:04.360272Z"}],"euvd":[{"id":"EUVD-2021-14555","description":"NULL Pointer Deference in the exif command line tool, when printing out XML formatted EXIF data, in exif v0.6.22 and earlier allows attackers to cause a Denial of Service (DoS) by uploading a malicious JPEG file, causing the application to crash.","status":"published","published":"2021-04-14T00:00:00Z","modified":"2024-08-03T21:33:15Z","updated_at":"2026-11-03T03:24:48.366655Z"}],"ghsa":[{"id":"GHSA-f35c-rqpm-6c5v","title":"NULL Pointer Deference in the \"actions.c\" library of libexif exif v0.6.22 allows attackers to...","description":"NULL Pointer Deference in the \"actions.c\" library of libexif exif v0.6.22 allows attackers to cause a Denial of Service (DoS) by uploading a malicious JPEG file, causing the application to crash.","status":"published","published":"2022-05-24T17:47:37Z","modified":"2023-01-30T05:01:30Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-476"],"updated_at":"2026-11-02T14:46:25.569206Z"}],"nvd":[{"id":"CVE-2021-27815","description":"NULL Pointer Deference in the exif command line tool, when printing out XML formatted EXIF data, in exif v0.6.22 and earlier allows attackers to cause a Denial of Service (DoS) by uploading a malicious JPEG file, causing the application to crash.","status":"published","published":"2021-04-14T14:15:13.787Z","modified":"2026-06-17T03:45:29.457Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary"},{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-476"],"updated_at":"2026-11-02T14:06:51.610648Z"}],"osv":[{"id":"CVE-2021-27815","description":"NULL Pointer Deference in the exif command line tool, when printing out XML formatted EXIF data, in exif v0.6.22 and earlier allows attackers to cause a Denial of Service (DoS) by uploading a malicious JPEG file, causing the application to crash.","status":"published","published":"2021-04-14T14:15:13.787Z","modified":"2026-10-20T14:17:18.567110088Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:44:19.129331Z"},{"id":"DEBIAN-CVE-2021-27815","description":"NULL Pointer Deference in the exif command line tool, when printing out XML formatted EXIF data, in exif v0.6.22 and earlier allows attackers to cause a Denial of Service (DoS) by uploading a malicious JPEG file, causing the application to crash.","status":"published","published":"2021-04-14T14:15:13.787Z","modified":"2026-10-23T18:03:25.879133039Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:45:34.94143Z"},{"id":"UBUNTU-CVE-2021-27815","description":"NULL Pointer Deference in the exif command line tool, when printing out XML formatted EXIF data, in exif v0.6.22 and earlier allows attackers to cause a Denial of Service (DoS) by uploading a malicious JPEG file, causing the application to crash.","status":"published","published":"2021-04-14T14:15:00Z","modified":"2026-10-17T12:57:12.908672281Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:54:26.779273Z"},{"id":"MGASA-2021-0252","title":"Updated exif packages fix a security vulnerability","description":"NULL Pointer Deference in the exif command line tool, when printing out\nXML formatted EXIF data, in exif v0.6.22 and earlier allows attackers to\ncause a Denial of Service (DoS) by uploading a malicious JPEG file, causing\nthe application to crash. (CVE-2021-27815).\n","status":"published","published":"2021-06-13T21:32:39Z","modified":"2026-04-16T04:42:36.455524042Z","updated_at":"2026-11-02T15:49:41.509337Z"}]}}