From 5662ffb295c6f9cb10768d8246f2656aae6b8abb Mon Sep 17 00:00:00 2001 From: Conor McDermottroe Date: Tue, 14 Jan 2014 02:08:13 +0000 Subject: Bug #66481 Segfaults on session_name() If the previous value of session.name was NULL then any call to session_name($string) would result in a segmentation fault. This changes the behaviour to set the value of session.name to "PHPSESSID" if a blank value is given in php.ini or via -d on the command line. There is already protection against setting it to NULL via session_name() or ini_set(). --- ext/session/session.c | 7 +++++++ ext/session/tests/bug66481.phpt | 16 ++++++++++++++++ 2 files changed, 23 insertions(+) create mode 100644 ext/session/tests/bug66481.phpt diff --git a/ext/session/session.c b/ext/session/session.c index 35db50ae64..5ea38475db 100644 --- a/ext/session/session.c +++ b/ext/session/session.c @@ -617,6 +617,13 @@ static PHP_INI_MH(OnUpdateSaveDir) /* {{{ */ static PHP_INI_MH(OnUpdateName) /* {{{ */ { + /* Don't accept a blank session name from php.ini or -d session.name= */ + if (!PG(modules_activated) && !new_value_length) { + /* Force the default value. */ + new_value = "PHPSESSID"; + new_value_length = 9; + } + /* Numeric session.name won't work at all */ if (PG(modules_activated) && (!new_value_length || is_numeric_string(new_value, new_value_length, NULL, NULL, 0))) { diff --git a/ext/session/tests/bug66481.phpt b/ext/session/tests/bug66481.phpt new file mode 100644 index 0000000000..0479b5ff4d --- /dev/null +++ b/ext/session/tests/bug66481.phpt @@ -0,0 +1,16 @@ +--TEST-- +Bug #66481: Calls to session_name() segfault when session.name is null. +--INI-- +session.name= +--SKIPIF-- + +--FILE-- +