{"id":"AZL-6363","summary":"CVE-2021-22925 affecting package curl for versions less than 7.76.0-5","details":"curl supports the `-t` command line option, known as `CURLOPT_TELNETOPTIONS`in libcurl. This rarely used option is used to send variable=content pairs toTELNET servers.Due to flaw in the option parser for sending `NEW_ENV` variables, libcurlcould be made to pass on uninitialized data from a stack based buffer to theserver. Therefore potentially revealing sensitive internal information to theserver using a clear-text network protocol.This could happen because curl did not call and use sscanf() correctly whenparsing the string provided by the application.","modified":"2026-04-01T05:20:11.284884Z","published":"2021-08-05T21:15:11Z","upstream":["CVE-2021-22925"],"references":[{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2021-22925"}],"affected":[{"package":{"name":"curl","ecosystem":"Azure Linux:2","purl":"pkg:rpm/azure-linux/curl"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7.76.0-5"}]}],"database_specific":{"source":"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-6363.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:L/I:N/A:N"}]}