{"id":"AZL-34946","summary":"CVE-2021-33643 affecting package libtar for versions less than 1.2.20-11","details":"An attacker who submits a crafted tar file with size in header struct being 0 may be able to trigger an calling of malloc(0) for a variable gnu_longlink, causing an out-of-bounds read.","modified":"2026-04-01T05:11:48.746926Z","published":"2022-08-10T20:15:20Z","upstream":["CVE-2021-33643"],"references":[{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2021-33643"}],"affected":[{"package":{"name":"libtar","ecosystem":"Azure Linux:3","purl":"pkg:rpm/azure-linux/libtar"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.2.20-11"}]}],"database_specific":{"source":"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-34946.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H"}]}