{"id":"CVE-2021-36978","aliases":["DEBIAN-CVE-2021-36978","DLA-3548-1","EUVD-2021-23554","GHSA-vgrr-57vg-f5rq","SUSE-SU-2022:2669-1","SUSE-SU-2022:2670-1","SUSE-SU-2022:3248-1","UBUNTU-CVE-2021-36978","USN-5026-1","USN-5026-2"],"status":"published","title":"QPDF 9.x through 9.1.1 and 10.x through 10.0.4 has a heap-based buffer overflow in...","description":"QPDF 9.x through 9.1.1 and 10.x through 10.0.4 has a heap-based buffer overflow in Pl_ASCII85Decoder::write (called from Pl_AES_PDF::flush and Pl_AES_PDF::finish) when a certain downstream write 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Party Advisory","fix"]},{"url":"https://github.com/google/oss-fuzz-vulns/blob/main/vulns/qpdf/OSV-2020-2245.yaml","tags":["x_transferred","Third Party Advisory","advisory","report"]},{"url":"https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=28262","tags":["x_transferred","Patch","Third Party Advisory","fix"]},{"url":"https://lists.debian.org/debian-lts-announce/2023/08/msg00037.html","tags":["mailing-list","x_transferred","web"]},{"url":"https://security.gentoo.org/glsa/202401-20","tags":["vendor-advisory","x_transferred","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-36978"},{"url":"https://github.com/advisories/GHSA-vgrr-57vg-f5rq"},{"url":"https://security-tracker.debian.org/tracker/CVE-2021-36978","tags":["advisory"]},{"url":"https://www.suse.com/support/update/announcement/2022/suse-su-20222669-1/","tags":["advisory"]},{"url":"https://bugzilla.suse.com/1188514","tags":["report"]},{"url":"https://bugzilla.suse.com/1201830","tags":["report"]},{"url":"https://www.suse.com/security/cve/CVE-2021-36978","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2022-34503","tags":["web"]},{"url":"https://www.suse.com/support/update/announcement/2022/suse-su-20222670-1/","tags":["advisory"]},{"url":"https://www.suse.com/support/update/announcement/2022/suse-su-20223248-1/","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2021-36978","tags":["report"]},{"url":"https://ubuntu.com/security/notices/USN-5026-1","tags":["advisory"]},{"url":"https://ubuntu.com/security/notices/USN-5026-2","tags":["advisory"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-36978","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2018-18020","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2021-36978","description":"QPDF 9.x through 9.1.1 and 10.x through 10.0.4 has a heap-based buffer overflow in Pl_ASCII85Decoder::write (called from Pl_AES_PDF::flush and Pl_AES_PDF::finish) when a certain downstream write fails.","status":"published","published":"2021-07-20T00:00:00Z","modified":"2024-10-15T17:14:33.718Z","updated_at":"2026-11-02T14:33:06.32268Z"}],"euvd":[{"id":"EUVD-2021-23554","description":"QPDF 9.x through 9.1.1 and 10.x through 10.0.4 has a heap-based buffer overflow in Pl_ASCII85Decoder::write (called from Pl_AES_PDF::flush and Pl_AES_PDF::finish) when a certain downstream write fails.","status":"published","published":"2021-07-20T00:00:00Z","modified":"2024-10-15T17:14:33Z","updated_at":"2026-11-03T00:27:36.689661Z"}],"ghsa":[{"id":"GHSA-vgrr-57vg-f5rq","title":"QPDF 9.x through 9.1.1 and 10.x through 10.0.4 has a heap-based buffer overflow in...","description":"QPDF 9.x through 9.1.1 and 10.x through 10.0.4 has a heap-based buffer overflow in Pl_ASCII85Decoder::write (called from Pl_AES_PDF::flush and Pl_AES_PDF::finish) when a certain downstream write fails.","status":"published","published":"2022-05-24T19:08:29Z","modified":"2024-01-15T15:30:42Z","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-787"],"updated_at":"2026-11-02T14:55:25.085259Z"}],"nvd":[{"id":"CVE-2021-36978","description":"QPDF 9.x through 9.1.1 and 10.x through 10.0.4 has a heap-based buffer overflow in Pl_ASCII85Decoder::write (called from Pl_AES_PDF::flush and Pl_AES_PDF::finish) when a certain downstream write fails.","status":"published","published":"2021-07-20T07:15:08.03Z","modified":"2026-06-17T03:59:45.627Z","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-787"],"updated_at":"2026-11-02T14:06:56.185362Z"}],"osv":[{"id":"CVE-2021-36978","description":"QPDF 9.x through 9.1.1 and 10.x through 10.0.4 has a heap-based buffer overflow in Pl_ASCII85Decoder::write (called from Pl_AES_PDF::flush and Pl_AES_PDF::finish) when a certain downstream write fails.","status":"published","published":"2021-07-20T07:15:08.03Z","modified":"2026-10-20T14:27:06.501448072Z","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":"2026-11-02T15:44:20.434873Z"},{"id":"DEBIAN-CVE-2021-36978","description":"QPDF 9.x through 9.1.1 and 10.x through 10.0.4 has a heap-based buffer overflow in Pl_ASCII85Decoder::write (called from Pl_AES_PDF::flush and Pl_AES_PDF::finish) when a certain downstream write fails.","status":"published","published":"2021-07-20T07:15:08.03Z","modified":"2026-10-23T18:03:49.798621534Z","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":"2026-11-02T15:45:35.233346Z"},{"id":"UBUNTU-CVE-2021-36978","description":"QPDF 9.x through 9.1.1 and 10.x through 10.0.4 has a heap-based buffer overflow in Pl_ASCII85Decoder::write (called from Pl_AES_PDF::flush and Pl_AES_PDF::finish) when a certain downstream write fails.","status":"published","published":"2021-07-20T07:15:00Z","modified":"2026-04-22T12:57:43.532109Z","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":"2026-11-02T15:54:27.870979Z"},{"id":"DLA-3548-1","title":"qpdf - security update","status":"published","published":"2023-08-29T00:00:00Z","modified":"2026-03-09T01:17:57.671806Z","updated_at":"2026-11-02T15:46:11.734021Z"},{"id":"SUSE-SU-2022:2669-1","title":"Security update for qpdf","description":"This update for qpdf fixes the following issues:\n\n- CVE-2022-34503: Fixed a heap buffer overflow via the function QPDF::processXRefStream (bsc#1201830).\n- CVE-2021-36978: Fixed heap-based buffer overflow in Pl_ASCII85Decoder::write (bsc#1188514).\n","status":"published","published":"2022-08-04T08:24:53Z","modified":"2026-02-04T04:26:15.142893Z","updated_at":"2026-11-02T15:53:50.965375Z"},{"id":"SUSE-SU-2022:2670-1","title":"Security update for qpdf","description":"This update for qpdf fixes the following issues:\n\n- CVE-2022-34503: Fixed a heap buffer overflow via the function QPDF:processXRefStream (bsc#1201830).\n- CVE-2021-36978: Fixed heap-based buffer overflow in Pl_ASCII85Decoder::write (bsc#1188514).\n","status":"published","published":"2022-08-04T08:26:19Z","modified":"2026-02-04T03:23:33.512033Z","updated_at":"2026-11-02T15:53:50.965375Z"},{"id":"SUSE-SU-2022:3248-1","title":"Security update for qpdf","description":"This update for qpdf fixes the following issues:\n\n- CVE-2021-36978: Fixed heap-based buffer overflow in Pl_ASCII85Decoder::write (bsc#1188514).\n","status":"published","published":"2022-09-12T07:03:24Z","modified":"2026-02-04T04:13:23.179991Z","updated_at":"2026-11-02T15:53:50.965375Z"},{"id":"USN-5026-1","title":"qpdf vulnerabilities","description":"It was discovered that QPDF incorrectly handled certain malformed PDF\nfiles. A remote attacker could use this issue to cause QPDF to consume\nresources, resulting in a denial of service. This issue only affected\nUbuntu 18.04 LTS. (CVE-2018-18020)\n\nIt was discovered that QPDF incorrectly handled certain malformed PDF\nfiles. A remote attacker could use this issue to cause QPDF to crash,\nresulting in a denial of service, or possibly execute arbitrary code.\n(CVE-2021-36978)\n","status":"published","published":"2021-07-29T16:28:39Z","modified":"2026-04-22T10:16:09.686601Z","updated_at":"2026-11-02T16:58:15.683829Z"},{"id":"USN-5026-2","title":"qpdf vulnerabilities","description":"USN-5026-1 fixed several vulnerabilities in QPDF. This update provides\nthe corresponding update for Ubuntu 16.04 ESM.\nOriginal advisory details:\n\n It was discovered that QPDF incorrectly handled certain malformed PDF\n files. A remote attacker could use this issue to cause QPDF to consume\n resources, resulting in a denial of service. (CVE-2018-18020)\n\n It was discovered that QPDF incorrectly handled certain malformed PDF\n files. A remote attacker could use this issue to cause QPDF to crash,\n resulting in a denial of service, or possibly execute arbitrary code.\n (CVE-2021-36978)\n","status":"published","published":"2021-08-02T14:15:25Z","modified":"2026-06-25T13:30:42.08817032Z","updated_at":"2026-11-02T16:58:15.683829Z"}]}}