A directory traversal flaw in SquirrelMail 1.4.22 allows an authenticated attacker to exfiltrate (or potentially delete) files from the hosting server, related to ../ in the att_local_name field in Deliver.class.php.Referenceshttp://www.openwall.com/lists/oss-security/2018/03/17/2https://gist.github.com/hannob/3c4f86863c418930ad08853c1109364ehttp://www.securitytracker.com/id/1040554https://www.debian.org/security/2018/dsa-4168https://insinuator.net/2018/03/squirrelmail-full-disclosure-troopers18/https://paste.pound-python.org/show/OjSLiFTxiBrTk63jqEUu/https://lists.debian.org/debian-lts-announce/2018/04/msg00012.htmlhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CVXTYMZ35IC5KPNMAE6BWAQWURMX7KZO/https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/T5FP5O562A4FM5TCFNEW73SS6PZONSAC/