{"id":"CVE-2018-20450","aliases":["DEBIAN-CVE-2018-20450","EUVD-2018-13005","GHSA-r369-mhv6-47fj","RSEC-2023-1","UBUNTU-CVE-2018-20450"],"status":"published","title":"The read_MSAT function in ole.c in libxls 1.4.0 has a double free that allows attackers to cause...","description":"The read_MSAT function in ole.c in libxls 1.4.0 has a double free that allows attackers to cause a denial of service (application crash) via a crafted file, a different vulnerability than 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Tracking","Third Party Advisory","report","web"]},{"url":"https://security.gentoo.org/glsa/202003-64","tags":["vendor-advisory","x_refsource_GENTOO","x_transferred","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2018-20450"},{"url":"https://github.com/advisories/GHSA-r369-mhv6-47fj"},{"url":"https://security-tracker.debian.org/tracker/CVE-2018-20450","tags":["advisory"]},{"url":"https://readxl.tidyverse.org/news/index.html#readxl-130","tags":["web"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2017-2896","tags":["web"]},{"url":"https://github.com/evanmiller/libxls/issues/35","tags":["web"]},{"url":"https://ubuntu.com/security/CVE-2018-20450","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2018-20450","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2018-20450","description":"The read_MSAT function in ole.c in libxls 1.4.0 has a double free that allows attackers to cause a denial of service (application crash) via a crafted file, a different vulnerability than CVE-2017-2897.","status":"published","published":"2018-12-25T17:00:00Z","modified":"2024-08-05T11:58:19.16Z","updated_at":"2026-11-02T14:35:00.237825Z"}],"euvd":[{"id":"EUVD-2018-13005","description":"The read_MSAT function in ole.c in libxls 1.4.0 has a double free that allows attackers to cause a denial of service (application crash) via a crafted file, a different vulnerability than CVE-2017-2897.","status":"published","published":"2018-12-25T17:00:00Z","modified":"2024-08-05T11:58:19Z","updated_at":"2026-11-03T02:39:30.889297Z"}],"ghsa":[{"id":"GHSA-r369-mhv6-47fj","title":"The read_MSAT function in ole.c in libxls 1.4.0 has a double free that allows attackers to cause...","description":"The read_MSAT function in ole.c in libxls 1.4.0 has a double free that allows attackers to cause a denial of service (application crash) via a crafted file, a different vulnerability than CVE-2017-2897.","status":"published","published":"2022-05-13T01:27:32Z","modified":"2023-02-01T05:07:55Z","cvss":[{"version":"3.0","score":6.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-415"],"updated_at":"2026-11-02T14:50:38.356016Z"}],"nvd":[{"id":"CVE-2018-20450","description":"The read_MSAT function in ole.c in libxls 1.4.0 has a double free that allows attackers to cause a denial of service (application crash) via a crafted file, a different vulnerability than CVE-2017-2897.","status":"published","published":"2018-12-25T17:29:00.25Z","modified":"2026-06-17T01:52:51.95Z","cvss":[{"version":"3.0","score":6.5,"vector":"CVSS:3.0/AV:N/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-415"],"updated_at":"2026-11-02T14:04:52.056758Z"}],"osv":[{"id":"CVE-2018-20450","description":"The read_MSAT function in ole.c in libxls 1.4.0 has a double free that allows attackers to cause a denial of service (application crash) via a crafted file, a different vulnerability than CVE-2017-2897.","status":"published","published":"2018-12-25T17:29:00.25Z","modified":"2026-10-20T10:50:24.432219442Z","cvss":[{"version":"3.0","score":6.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:44:09.145458Z"},{"id":"DEBIAN-CVE-2018-20450","description":"The read_MSAT function in ole.c in libxls 1.4.0 has a double free that allows attackers to cause a denial of service (application crash) via a crafted file, a different vulnerability than CVE-2017-2897.","status":"published","published":"2018-12-25T17:29:00.25Z","modified":"2026-10-23T18:03:04.874725538Z","cvss":[{"version":"3.0","score":6.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:45:30.57382Z"},{"id":"UBUNTU-CVE-2018-20450","description":"The read_MSAT function in ole.c in libxls 1.4.0 has a double free that allows attackers to cause a denial of service (application crash) via a crafted file, a different vulnerability than CVE-2017-2897.","status":"published","published":"2018-12-25T17:29:00Z","modified":"2026-10-17T12:54:58.522421506Z","cvss":[{"version":"3.0","score":6.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:54:17.91743Z"},{"id":"RSEC-2023-1","title":"Double-free and invalid free vulnerabilities","description":"The readxl R package has been found susceptible to vulnerabilities due to its dependency on libxls library version 1.4.0. Two distinct memory management issues were discovered in the read_MSAT and read_MSAT_body functions within the ole.c component of libxls. The first vulnerability is a double-free flaw in the read_MSAT function, which could be exploited by an attacker using a crafted file to cause a Denial of Service (DoS), resulting in an application crash. This vulnerability is different from CVE-2017-2897. The second vulnerability is an invalid free flaw in the read_MSAT_body function. This issue, stemming from inconsistent memory management in the ole2_read_header function, allows attackers to trigger a DoS, application crash, or possibly an unspecified impact through a specially crafted file.","status":"published","published":"2023-07-13T02:37:06.6Z","modified":"2025-05-19T19:43:47.604636Z","updated_at":"2026-11-02T15:53:39.492624Z"}]}}