{"id":"CVE-2021-33635","aliases":["EUVD-2021-20312","GHSA-r64q-rcp8-3m38","OESA-2023-1686"],"status":"published","title":"Pull malicious images may cause process to be hijacked","description":"When malicious images are pulled by isula pull, attackers can execute arbitrary code.","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00558,"percentile":0.46839,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-665","CWE-94"],"published":"2023-09-28T11:06:08Z","modified":"2026-08-18T01:17:04Z","affected":[{"source":"osv","ecosystem":"openEuler:20.03-LTS-SP1","package":"iSulad","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0.8-20230216.115408.git40ea936a.oe1"}]}],"bundled":4},{"source":"osv","ecosystem":"openEuler:20.03-LTS-SP3","package":"iSulad","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0.18-13.oe1"}]}],"bundled":4},{"source":"osv","ecosystem":"openEuler:22.03-LTS","package":"iSulad","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.1.3-6.oe2203sp2"}]}],"bundled":4},{"source":"osv","ecosystem":"openEuler:22.03-LTS-SP1","package":"iSulad","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0.18-13.oe2203sp1"}]}],"bundled":4},{"source":"osv","ecosystem":"openEuler:22.03-LTS-SP2","package":"iSulad","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.1.3-6.oe2203sp2"}]}],"bundled":4}],"products":[{"vendor":"openeuler","product":"isula"},{"vendor":"openeuler","product":"isulad"}],"references":[{"url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2023-1686","tags":["x_transferred","Vendor Advisory"]},{"url":"https://gitee.com/src-openeuler/iSulad/pulls/627/files","tags":["x_transferred","Patch"]},{"url":"https://gitee.com/src-openeuler/iSulad/pulls/600/files","tags":["x_transferred","Patch"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-33635","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-r64q-rcp8-3m38"},{"url":"https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2023-1686","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-33636","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-33637","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-33638","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2021-33635","title":"Pull malicious images may cause process to be hijacked","description":"When malicious images are pulled by isula pull, attackers can execute arbitrary code.","status":"published","published":"2023-10-29T07:56:44.304Z","modified":"2024-09-09T14:20:16.034Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"cna"}],"cwes":["CWE-665","CWE-94"],"updated_at":"2026-11-02T14:33:10.555814Z"}],"euvd":[{"id":"EUVD-2021-20312","description":"When malicious images are pulled by isula pull, attackers can execute arbitrary code.","status":"published","published":"2023-10-29T07:56:44Z","modified":"2024-09-09T14:20:16Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-03T00:56:00.719005Z"}],"ghsa":[{"id":"GHSA-r64q-rcp8-3m38","title":"When malicious images are pulled by isula pull, attackers can execute arbitrary code.","description":"When malicious images are pulled by isula pull, attackers can execute arbitrary code.","status":"published","published":"2023-10-29T09:30:27Z","modified":"2024-09-09T18:30:28Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-94","CWE-665"],"updated_at":"2026-11-02T14:58:12.499572Z"}],"nvd":[{"id":"CVE-2021-33635","description":"When malicious images are pulled by isula pull, attackers can execute arbitrary code.","status":"published","published":"2023-10-29T08:15:20.647Z","modified":"2026-06-17T03:54:54.567Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"secondary"},{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"}],"cwes":["CWE-665","CWE-94"],"updated_at":"2026-11-02T14:07:07.764332Z"}],"osv":[{"id":"OESA-2023-1686","title":"iSulad security update","description":"\r\n\r\nSecurity Fix(es):\r\n\r\nWhen malicious images are pulled by isula pull, attackers can execute arbitrary code.(CVE-2021-33635)\r\n\r\nWhen the isula load command is used to load malicious images, attackers can execute arbitrary code.(CVE-2021-33636)\r\n\r\nWhen the isula export command is used to export a container to an image and the container is controlled by an attacker, the attacker can escape the container.(CVE-2021-33637)\r\n\r\nWhen the isula cp command is used to copy files from a container to a host machine and the container is controlled by an attacker, the attacker can escape the container.(CVE-2021-33638)","status":"published","published":"2023-09-28T11:06:08Z","modified":"2026-08-18T01:17:04.829883475Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:52:40.328856Z"}]}}