Op 4-jan-2008, om 9:48 heeft Thomas Stegbauer het volgende geschreven:
php5-recode crashes on amd64, so all program, which need it, are
unusable
This happens for me as well. It's especially troublesome in
combination with squirrelmail and squirrelmail-decode - a specially
crafted email could be made into a potential Denial of Service
attack. We're seeing this problem when a mail with big5 encoding
gets opened with Squirrelmail. The php5-cgi process eats up all
memory when the inbox gets opened.
Some more info:
(amd64-etch)[EMAIL PROTECTED]:~$ cat > test.php
<?php
echo recode_string("utf-8..flat","aaaa");
?>
(amd64-etch)[EMAIL PROTECTED]:~$ php5 test.php
Segmentation fault (core dumped)
Using the recode utility works fine:
(amd64-etch)[EMAIL PROTECTED]:~$ echo "aaaa" | recode "utf-8..flat"
aaaa
(amd64-etch)[EMAIL PROTECTED]:~$ gdb -c core /usr/bin/php5
GNU gdb 6.4.90-debian
Copyright (C) 2006 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and
you are
welcome to change it and/or distribute copies of it under certain
conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB. Type "show warranty" for
details.
This GDB was configured as "x86_64-linux-gnu"...(no debugging symbols
found)
Using host libthread_db library "/lib/libthread_db.so.1".
Reading symbols from /lib/libcrypt.so.1...(no debugging symbols
found)...done.
Loaded symbols for /lib/libcrypt.so.1
Reading symbols from /usr/lib/libz.so.1...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libz.so.1
Reading symbols from /usr/lib/libpanel.so.5...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libpanel.so.5
Reading symbols from /lib/libncurses.so.5...(no debugging symbols
found)...done.
Loaded symbols for /lib/libncurses.so.5
Reading symbols from /usr/lib/libssl.so.0.9.8...
(no debugging symbols found)...done.
Loaded symbols for /usr/lib/libssl.so.0.9.8
Reading symbols from /usr/lib/libpcre.so.3...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libpcre.so.3
Reading symbols from /usr/lib/libdb-4.4.so...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libdb-4.4.so
Reading symbols from /lib/libbz2.so.1.0...(no debugging symbols
found)...done.
Loaded symbols for /lib/libbz2.so.1.0
Reading symbols from /lib/libresolv.so.2...
(no debugging symbols found)...done.
Loaded symbols for /lib/libresolv.so.2
Reading symbols from /lib/libm.so.6...(no debugging symbols
found)...done.
Loaded symbols for /lib/libm.so.6
Reading symbols from /lib/libdl.so.2...(no debugging symbols
found)...done.
Loaded symbols for /lib/libdl.so.2
Reading symbols from /lib/libnsl.so.1...(no debugging symbols
found)...done.
Loaded symbols for /lib/libnsl.so.1
Reading symbols from /usr/lib/libgssapi_krb5.so.2...
(no debugging symbols found)...done.
Loaded symbols for /usr/lib/libgssapi_krb5.so.2
Reading symbols from /usr/lib/libkrb5.so.3...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libkrb5.so.3
Reading symbols from /usr/lib/libk5crypto.so.3...(no debugging
symbols found)...done.
Loaded symbols for /usr/lib/libk5crypto.so.3
Reading symbols from /lib/libcom_err.so.2...(no debugging symbols
found)...done.
Loaded symbols for /lib/libcom_err.so.2
Reading symbols from /usr/lib/libxml2.so.2...
(no debugging symbols found)...done.
Loaded symbols for /usr/lib/libxml2.so.2
Reading symbols from /lib/libc.so.6...(no debugging symbols
found)...done.
Loaded symbols for /lib/libc.so.6
Reading symbols from /usr/lib/libcrypto.so.0.9.8...(no debugging
symbols found)...done.
Loaded symbols for /usr/lib/libcrypto.so.0.9.8
Reading symbols from /lib/ld-linux-x86-64.so.2...(no debugging
symbols found)...done.
Loaded symbols for /lib64/ld-linux-x86-64.so.2
Reading symbols from /usr/lib/libkrb5support.so.0...
(no debugging symbols found)...done.
Loaded symbols for /usr/lib/libkrb5support.so.0
Reading symbols from /usr/lib/php5/20060613/pdo.so...(no debugging
symbols found)...done.
Loaded symbols for /usr/lib/php5/20060613/pdo.so
Reading symbols from /usr/lib/php5/20060613/recode.so...(no debugging
symbols found)...done.
Loaded symbols for /usr/lib/php5/20060613/recode.so
Reading symbols from /usr/lib/librecode.so.0...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/librecode.so.0
Reading symbols from /lib/libnss_files.so.2...
(no debugging symbols found)...done.
Loaded symbols for /lib/libnss_files.so.2
Core was generated by `php5 test.php'.
Program terminated with signal 11, Segmentation fault.
#0 0x00002b19bb7c012e in transform_with_libiconv () from /usr/lib/
librecode.so.0
(gdb) bt
#0 0x00002b19bb7c012e in transform_with_libiconv () from /usr/lib/
librecode.so.0
#1 0x00002b19bb7cb4a0 in transform_byte_to_variable () from /usr/lib/
librecode.so.0
#2 0x00002b19bb7cbcde in recode_perform_task () from /usr/lib/
librecode.so.0
#3 0x00002b19bb7cadc0 in recode_buffer_to_buffer () from /usr/lib/
librecode.so.0
#4 0x00002b19bb6184b1 in zif_recode_string () from /usr/lib/
php5/20060613/recode.so
#5 0x000000000065fcd7 in execute ()
#6 0x000000000064f6f3 in execute ()
#7 0x00000000006326f9 in zend_execute_scripts ()
#8 0x00000000005f2ec8 in php_execute_script ()
#9 0x00000000006b8fe5 in main ()
(gdb)
--
Bart
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