Bug #76972 [NEW]: Data truncation due to forceful ssl socket shutdown

From: manuel-php at mausz dot at Operating system: Linux PHP version: 7.1.22 Package: FTP related Bug Type: Bug Bug description:Data truncation due to forceful ssl socket shutdown Description: ------------ With TLS 1.3 session tickets get sent after the handshake has completed (in TLS 1.2 this only happens upon renegotiation). With connections that never read from the socket (like the FTP data connection) this data will never actually be trained. However closing the socket without training (unidirectional shutdown) causes an ECONNRESET on server side which might lead to data truncation. As explained in https://www.openssl.org/docs/manmaster/man3/SSL_shutdown.html PHP instead should call SSL_read after calling SSL_shutdown until we've received the servers close_notify alert. For reference see CURLs implementation: https://github.com/curl/curl/blob/e2dd435d473cdc97785df95d032276fafb4b7746/lib/vtls/openssl.c#L1267 As well as https://github.com/openssl/openssl/issues/6904 Test script: --------------- ProFTPd with OpenSSL 1.1.1 and TLS 1.3. Script is as simple as: ftp_put($ftp, "dest", "source", FTP_BINARY); Results in: Transfer aborted. Link to file server lost -- Edit bug report at https://bugs.php.net/bug.php?id=76972&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=76972&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=76972&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=76972&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=76972&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=76972&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=76972&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=76972&r=needscript Try newer version: https://bugs.php.net/fix.php?id=76972&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=76972&r=support Expected behavior: https://bugs.php.net/fix.php?id=76972&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=76972&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=76972&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=76972&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=76972&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=76972&r=dst IIS Stability: https://bugs.php.net/fix.php?id=76972&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=76972&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=76972&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=76972&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=76972&r=mysqlcfg