{"id":"AZL-86997","summary":"CVE-2026-45232 affecting package rsync for versions less than 3.4.3-1","details":"Rsync versions before 3.4.3 contain an off-by-one out-of-bounds stack write vulnerability in the establish_proxy_connection() function in socket.c that allows network attackers to corrupt stack memory by sending a malformed HTTP proxy response. Attackers can exploit this by positioning themselves between the client and proxy or controlling the proxy server to send a response line of 1023 or more bytes without a newline terminator, causing a null byte to be written to an out-of-bounds stack address when the RSYNC_PROXY environment variable is set.","modified":"2026-08-28T17:48:00.270288851Z","published":"2026-05-20T02:16:36Z","upstream":["CVE-2026-45232"],"references":[{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-45232"}],"affected":[{"package":{"name":"rsync","ecosystem":"Azure Linux:3","purl":"pkg:rpm/azure-linux/rsync"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.4.3-1"}]}],"database_specific":{"source":"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-86997.json"}}],"schema_version":"1.9.0"}