{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"state":"PUBLISHED","cveId":"CVE-2021-33640","assignerOrgId":"7e1ac599-2767-43fa-b3ea-f10178cc98f2","assignerShortName":"openEuler","dateUpdated":"2025-04-17T14:58:03.494Z","dateReserved":"2021-05-28T00:00:00.000Z","datePublished":"2022-12-19T00:00:00.000Z"},"containers":{"cna":{"providerMetadata":{"orgId":"7e1ac599-2767-43fa-b3ea-f10178cc98f2","shortName":"openEuler","dateUpdated":"2022-12-28T00:00:00.000Z"},"descriptions":[{"lang":"en","value":"After tar_close(), libtar.c releases the memory pointed to by pointer t. After tar_close() is called in the list() function, it continues to use pointer t: free_longlink_longname(t->th_buf) . As a result, the released memory is used (use-after-free)."}],"affected":[{"vendor":"openEuler","product":"openEuler 22.03 LTS","versions":[{"version":" libtar 1.2.20-21","status":"affected"}]},{"vendor":"openEuler","product":"openEuler 20.03 LTS SP1","versions":[{"version":" libtar 1.2.20-19","status":"affected"}]},{"vendor":"openEuler","product":"openEuler 20.03 LTS SP3","versions":[{"version":" libtar 1.2.20-19","status":"affected"}]}],"references":[{"url":"https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2021-33640&packageName=libtar"},{"name":"FEDORA-2022-88772d0a2d","tags":["vendor-advisory"],"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4S4PJRCJLEAWN2EKXGLSOBTL7O57V7NC/"},{"name":"FEDORA-2022-ccc68b06cc","tags":["vendor-advisory"],"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7WX5YE66CT7Y5C2HTHXSFDKQWYWYWJ2T/"}],"metrics":[{"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH","baseScore":6.2,"baseSeverity":"MEDIUM"}}],"problemTypes":[{"descriptions":[{"type":"CWE","lang":"en","description":"CWE-416 Use After Free","cweId":"CWE-416"}]}],"x_generator":{"engine":"Vulnogram 0.0.9"},"source":{"discovery":"UNKNOWN"}},"adp":[{"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2024-08-03T23:58:21.909Z"},"title":"CVE Program Container","references":[{"url":"https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2021-33640&packageName=libtar","tags":["x_transferred"]},{"name":"FEDORA-2022-88772d0a2d","tags":["vendor-advisory","x_transferred"],"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4S4PJRCJLEAWN2EKXGLSOBTL7O57V7NC/"},{"name":"FEDORA-2022-ccc68b06cc","tags":["vendor-advisory","x_transferred"],"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7WX5YE66CT7Y5C2HTHXSFDKQWYWYWJ2T/"}]},{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2025-04-17T14:57:23.132306Z","id":"CVE-2021-33640","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2025-04-17T14:58:03.494Z"}}]}}