{"id":"CVE-2017-1000421","aliases":["DEBIAN-CVE-2017-1000421","DLA-1233-1","DSA-4084-1","EUVD-2017-1558","GHSA-vp7h-g9mh-c77g","MGASA-2018-0086","UBUNTU-CVE-2017-1000421","USN-4803-1"],"status":"published","title":"Gifsicle gifview 1.89 and older is vulnerable to a use-after-free in the read_gif function...","description":"Gifsicle gifview 1.89 and older is vulnerable to a use-after-free in the read_gif function resulting potential code 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List","Third Party Advisory","advisory"]},{"url":"https://www.debian.org/security/2018/dsa-4084","tags":["vendor-advisory","x_refsource_DEBIAN","x_transferred","Third Party Advisory","advisory","web"]},{"url":"https://github.com/kohler/gifsicle/issues/114","tags":["x_refsource_CONFIRM","x_transferred","Issue Tracking","Patch","Third Party Advisory","fix","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2017-1000421"},{"url":"https://github.com/advisories/GHSA-vp7h-g9mh-c77g"},{"url":"https://security-tracker.debian.org/tracker/CVE-2017-1000421","tags":["advisory"]},{"url":"https://advisories.mageia.org/MGASA-2018-0086.html","tags":["advisory"]},{"url":"https://bugs.mageia.org/show_bug.cgi?id=22393","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2017-1000421","tags":["report"]},{"url":"https://github.com/kohler/gifsicle/commit/81fd7823f6d9c85ab598bc850e40382068361185","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2017-1000421","tags":["report"]},{"url":"https://ubuntu.com/security/notices/USN-4803-1","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2017-18120","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2017-1000421","description":"Gifsicle gifview 1.89 and older is vulnerable to a use-after-free in the read_gif function resulting potential code 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potential code execution","status":"published","published":"2018-01-02T19:29:00.3Z","modified":"2026-10-20T10:48:07.70463393Z","cvss":[{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:44:03.851821Z"},{"id":"DEBIAN-CVE-2017-1000421","description":"Gifsicle gifview 1.89 and older is vulnerable to a use-after-free in the read_gif function resulting potential code execution","status":"published","published":"2018-01-02T19:29:00.3Z","modified":"2026-09-01T20:02:40.52298195Z","cvss":[{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:45:28.207321Z"},{"id":"UBUNTU-CVE-2017-1000421","description":"Gifsicle gifview 1.89 and older is vulnerable to a use-after-free in the read_gif function resulting potential code 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(CVE-2017-1000421).\n","status":"published","published":"2018-01-16T18:04:41Z","modified":"2026-04-16T06:25:09.603656708Z","updated_at":"2026-11-02T15:49:40.442238Z"},{"id":"USN-4803-1","title":"gifsicle vulnerabilities","description":"It was discovered that Gifsicle did not properly handle certain input. If a\nuser were tricked into opening a malicious GIF, an attacker could\npotentially execute arbitrary code.","status":"published","published":"2021-03-15T21:30:45Z","modified":"2026-06-29T13:48:26.647802362Z","updated_at":"2026-11-02T16:58:15.159055Z"}]}}