When running exec('rsync') with PHP, getting Warning: Error while sending QUERY packet.

When running exec('rsync') with PHP, getting Warning: Error while sending QUERY packet.

[Björn Tantau]

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Sorry for the missing cygcheck.out, the Spamfilter wouldn't let me pass. Every package is up to date.
rsync 3.1.2
php 7.0.19
mysql 10.1.19-MariaDB

Hi,

I encountered a rather strange PHP bug I could only reproduce in cygwin 
(32 Bit and 64 Bit).
If you have a working MySQL-Connection and then run exec('rsync') the 
next Query produces the Warning:
PHP Warning:  Error while sending QUERY packet. PID=15036 in 
/home/limora/test.php on line 5

See the attached test.php. It should output:
object(PDOStatement)#2 (1) {
   ["queryString"]=>
   string(16) "SELECT * FROM db"
}
object(PDOStatement)#2 (1) {
   ["queryString"]=>
   string(16) "SELECT * FROM db"
}

but it does output:
object(PDOStatement)#2 (1) {
   ["queryString"]=>
   string(16) "SELECT * FROM db"
}
PHP Warning:  Error while sending QUERY packet. PID=15036 in 
/home/limora/test.php on line 5
bool(false)

So far I could reproduce this with the MariaDB from cygwin as well as 
xampp, so I guess it's not a MySQL problem. I was only able to reproduce 
this with rsync so far and  no other cli program.

I'm completely stumped as to what could be causing this.

Cheers,
Björn

[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
[-- Attachment #2: test.php --]
[-- Type: text/x-php; name="test.php", Size: 169 bytes --]

<?php
$pdo = new PDO('mysql:host=127.0.0.1;dbname=mysql', 'root');
var_dump($pdo->query('SELECT * FROM db'));
exec('rsync');
var_dump($pdo->query('SELECT * FROM db'));


[-- Attachment #3: Type: text/plain, Size: 219 bytes --]


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Re: When running exec('rsync') with PHP, getting Warning: Error while sending QUERY packet.

[Brian Inglis]

On 2017-05-17 07:39, Björn Tantau wrote:
> I encountered a rather strange PHP bug I could only reproduce in
> cygwin (32 Bit and 64 Bit).
> If you have a working MySQL-Connection and then run exec('rsync') the 
> next Query produces the Warning:
> PHP Warning:  Error while sending QUERY packet. PID=15036 in 
> /home/limora/test.php on line 5
> test.php:
> <?php
> $pdo = new PDO('mysql:host=127.0.0.1;dbname=mysql', 'root');
> var_dump($pdo->query('SELECT * FROM db'));
> exec('rsync');
> var_dump($pdo->query('SELECT * FROM db'));
> It should output:
> object(PDOStatement)#2 (1) {
>    ["queryString"]=>
>    string(16) "SELECT * FROM db"
> }
> object(PDOStatement)#2 (1) {
>    ["queryString"]=>
>    string(16) "SELECT * FROM db"
> }
> but it does output:
> object(PDOStatement)#2 (1) {
>    ["queryString"]=>
>    string(16) "SELECT * FROM db"
> }
> PHP Warning:  Error while sending QUERY packet. PID=15036 in 
> /home/limora/test.php on line 5
> bool(false)
> So far I could reproduce this with the MariaDB from cygwin as well as
> xampp, so I guess it's not a MySQL problem. I was only able to 
> reproduce this with rsync so far and  no other cli program.

Try running some other program which fails, like /bin/false, or with
options or args that cause failure, like "/bin/cat /var/empty/*".

> I'm completely stumped as to what could be causing this.

Async reporting by PHP of error 1 generated by running rsync with no
args.
It should be a PHP bug if it does not report any command error.

Try typing "rsync" at a command line and you get the same.
Don't run rsync with no args: don't run commands from web pages;
don't exec commands, without explicit protected executable paths,
whose arguments have been sanitized, or can sanitize its own,
from web pages.

Just look at e.g. the metasploit site for easy steps from PHP to
a remote controlled bot command and control server, with a nice
PHP web front end. "Be careful out there."

-- 
Take care. Thanks, Brian Inglis, Calgary, Alberta, Canada

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Re: When running exec('rsync') with PHP, getting Warning: Error while sending QUERY packet.

[Andrey Repin]

Greetings, Björn Tantau!

> Sorry for the missing cygcheck.out, the Spamfilter wouldn't let me pass.
> Every package is up to date.
> rsync 3.1.2
> php 7.0.19
> mysql 10.1.19-MariaDB

> Hi,

> I encountered a rather strange PHP bug I could only reproduce in cygwin 
> (32 Bit and 64 Bit).
> If you have a working MySQL-Connection and then run exec('rsync')

exec()'ing anything from PHP, especially from PHP running on a webserver is a
very, very, very bad idea.

> the next Query produces the Warning:
> PHP Warning:  Error while sending QUERY packet. PID=15036 in 
> /home/limora/test.php on line 5

Show the

phpinfo(~(2+16+32+64));

please...

> So far I could reproduce this with the MariaDB from cygwin as well as 
> xampp, so I guess it's not a MySQL problem. I was only able to reproduce 
> this with rsync so far and  no other cli program.

> I'm completely stumped as to what could be causing this.

I could guess some possibilities, but I'd like to see settings first.


-- 
With best regards,
Andrey Repin
Thursday, May 18, 2017 15:23:00

Sorry for my terrible english...
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Re: When running exec('rsync') with PHP, getting Warning: Error while sending QUERY packet.

[Björn Tantau]

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Am 2017-05-18 14:30, schrieb Andrey Repin:
>> I encountered a rather strange PHP bug I could only reproduce in 
>> cygwin
>> (32 Bit and 64 Bit).
>> If you have a working MySQL-Connection and then run exec('rsync')
> 
> exec()'ing anything from PHP, especially from PHP running on a 
> webserver is a
> very, very, very bad idea.

I know, I know. This is actually a CLI script. The production server 
where this is from is actually not allowed to exec anything.

>> the next Query produces the Warning:
>> PHP Warning:  Error while sending QUERY packet. PID=15036 in
>> /home/limora/test.php on line 5
> 
> Show the
> 
> phpinfo(~(2+16+32+64));
> 
> please...

See the attached phpinfo.txt.


And in reply to Brian Inglis (I had only subscribed to the list from my 
work account, but stupid Outlook gets caught in the spam filter):
It also happens with valid rsync calls and it doesn't happen with other 
programs that error out.


Regards,
Björn

[-- Attachment #2: phpinfo.txt --]
[-- Type: text/plain, Size: 22289 bytes --]

phpinfo()
PHP Version => 7.0.19

System => CYGWIN_NT-6.3 MESSE18 2.8.0(0.309/5/3) 2017-04-01 20:47 x86_64
Build Date => May 14 2017 03:00:05
Server API => Command Line Interface
Virtual Directory Support => disabled
Configuration File (php.ini) Path => /etc
Loaded Configuration File => /etc/php.ini
Scan this dir for additional .ini files => /etc/php.d
Additional .ini files parsed => /etc/php.d/bz2.ini,
/etc/php.d/ctype.ini,
/etc/php.d/curl.ini,
/etc/php.d/exif.ini,
/etc/php.d/fileinfo.ini,
/etc/php.d/gd.ini,
/etc/php.d/gettext.ini,
/etc/php.d/iconv.ini,
/etc/php.d/json.ini,
/etc/php.d/mbstring.ini,
/etc/php.d/mcrypt.ini,
/etc/php.d/pdo_mysql.ini,
/etc/php.d/phar.ini,
/etc/php.d/posix.ini,
/etc/php.d/simplexml.ini,
/etc/php.d/soap.ini,
/etc/php.d/sockets.ini,
/etc/php.d/sqlite3.ini,
/etc/php.d/tidy.ini,
/etc/php.d/xmlreader.ini,
/etc/php.d/xmlrpc.ini,
/etc/php.d/xmlwriter.ini,
/etc/php.d/xsl.ini,
/etc/php.d/zip.ini,
/etc/php.d/zlib.ini

PHP API => 20151012
PHP Extension => 20151012
Zend Extension => 320151012
Zend Extension Build => API320151012,NTS
PHP Extension Build => API20151012,NTS
Debug Build => no
Thread Safety => disabled
Zend Signal Handling => disabled
Zend Memory Manager => enabled
Zend Multibyte Support => provided by mbstring
IPv6 Support => enabled
DTrace Support => disabled

Registered PHP Streams => https, ftps, php, file, glob, data, http, ftp, compress.bzip2, compress.zlib, zip, phar
Registered Stream Socket Transports => tcp, udp, unix, udg, ssl, sslv3, tls, tlsv1.0, tlsv1.1, tlsv1.2
Registered Stream Filters => string.rot13, string.toupper, string.tolower, string.strip_tags, convert.*, consumed, dechunk, bzip2.*, convert.iconv.*, mcrypt.*, mdecrypt.*, zlib.*

This program makes use of the Zend Scripting Language Engine:
Zend Engine v3.0.0, Copyright (c) 1998-2017 Zend Technologies


 _______________________________________________________________________


Configuration

bz2

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Stream Wrapper support => compress.bzip2://
Stream Filter support => bzip2.decompress, bzip2.compress
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Openssl default config => /usr/ssl/openssl.cnf

Directive => Local Value => Master Value
openssl.cafile => no value => no value
openssl.capath => no value => no value

pcre

PCRE (Perl Compatible Regular Expressions) Support => enabled
PCRE Library Version => 8.40 2017-01-11
PCRE JIT Support => enabled

Directive => Local Value => Master Value
pcre.backtrack_limit => 1000000 => 1000000
pcre.jit => 0 => 0
pcre.recursion_limit => 100000 => 100000

PDO

PDO support => enabled
PDO drivers => mysql

pdo_mysql

PDO Driver for MySQL => enabled
Client API version => mysqlnd 5.0.12-dev - 20150407 - $Id: b5c5906d452ec590732a93b051f3827e02749b83 $

Directive => Local Value => Master Value
pdo_mysql.default_socket => /cygdrive/c/xampp/mysql/mysql.sock => /cygdrive/c/xampp/mysql/mysql.sock

Phar

Phar: PHP Archive support => enabled
Phar EXT version => 2.0.2
Phar API version => 1.1.1
SVN revision => $Id: 9d91fd26ae99260111b934cc25174387d4bd7059 $
Phar-based phar archives => enabled
Tar-based phar archives => enabled
ZIP-based phar archives => enabled
gzip compression => enabled
bzip2 compression => enabled
Native OpenSSL support => enabled


Phar based on pear/PHP_Archive, original concept by Davey Shafik.
Phar fully realized by Gregory Beaver and Marcus Boerger.
Portions of tar implementation Copyright (c) 2003-2009 Tim Kientzle.
Directive => Local Value => Master Value
phar.cache_list => no value => no value
phar.readonly => On => On
phar.require_hash => On => On

posix

Revision => $Id: b691ca925e7a085e6929579c4eba8fed0732e0ef $

readline

Readline Support => enabled
Readline library => EditLine wrapper

Directive => Local Value => Master Value
cli.pager => no value => no value
cli.prompt => \b \>  => \b \> 

Reflection

Reflection => enabled
Version => $Id: 7d703262f14bc65e05ff76fb3714c945f9bf961a $

session

Session Support => enabled
Registered save handlers => files user 
Registered serializer handlers => php_serialize php php_binary 

Directive => Local Value => Master Value
session.auto_start => Off => Off
session.cache_expire => 180 => 180
session.cache_limiter => nocache => nocache
session.cookie_domain => no value => no value
session.cookie_httponly => Off => Off
session.cookie_lifetime => 0 => 0
session.cookie_path => / => /
session.cookie_secure => Off => Off
session.entropy_file => /dev/urandom => /dev/urandom
session.entropy_length => 32 => 32
session.gc_divisor => 1000 => 1000
session.gc_maxlifetime => 1440 => 1440
session.gc_probability => 1 => 1
session.hash_bits_per_character => 5 => 5
session.hash_function => 0 => 0
session.lazy_write => On => On
session.name => PHPSESSID => PHPSESSID
session.referer_check => no value => no value
session.save_handler => files => files
session.save_path => no value => no value
session.serialize_handler => php => php
session.upload_progress.cleanup => On => On
session.upload_progress.enabled => On => On
session.upload_progress.freq => 1% => 1%
session.upload_progress.min_freq => 1 => 1
session.upload_progress.name => PHP_SESSION_UPLOAD_PROGRESS => PHP_SESSION_UPLOAD_PROGRESS
session.upload_progress.prefix => upload_progress_ => upload_progress_
session.use_cookies => On => On
session.use_only_cookies => On => On
session.use_strict_mode => Off => Off
session.use_trans_sid => 0 => 0

SimpleXML

Simplexml support => enabled
Revision => $Id: b8b5c37931a53e50a937c0aef2a26d351e173215 $
Schema support => enabled

soap

Soap Client => enabled
Soap Server => enabled

Directive => Local Value => Master Value
soap.wsdl_cache => 1 => 1
soap.wsdl_cache_dir => /tmp => /tmp
soap.wsdl_cache_enabled => 1 => 1
soap.wsdl_cache_limit => 5 => 5
soap.wsdl_cache_ttl => 86400 => 86400

sockets

Sockets Support => enabled

SPL

SPL support => enabled
Interfaces => Countable, OuterIterator, RecursiveIterator, SeekableIterator, SplObserver, SplSubject
Classes => AppendIterator, ArrayIterator, ArrayObject, BadFunctionCallException, BadMethodCallException, CachingIterator, CallbackFilterIterator, DirectoryIterator, DomainException, EmptyIterator, FilesystemIterator, FilterIterator, GlobIterator, InfiniteIterator, InvalidArgumentException, IteratorIterator, LengthException, LimitIterator, LogicException, MultipleIterator, NoRewindIterator, OutOfBoundsException, OutOfRangeException, OverflowException, ParentIterator, RangeException, RecursiveArrayIterator, RecursiveCachingIterator, RecursiveCallbackFilterIterator, RecursiveDirectoryIterator, RecursiveFilterIterator, RecursiveIteratorIterator, RecursiveRegexIterator, RecursiveTreeIterator, RegexIterator, RuntimeException, SplDoublyLinkedList, SplFileInfo, SplFileObject, SplFixedArray, SplHeap, SplMinHeap, SplMaxHeap, SplObjectStorage, SplPriorityQueue, SplQueue, SplStack, SplTempFileObject, UnderflowException, UnexpectedValueException

sqlite3

SQLite3 support => enabled
SQLite3 module version => 0.7-dev
SQLite Library => 3.18.0

Directive => Local Value => Master Value
sqlite3.extension_dir => no value => no value

standard

Dynamic Library Support => enabled
Path to sendmail => /usr/sbin/sendmail -t -i 

Directive => Local Value => Master Value
assert.active => 1 => 1
assert.bail => 0 => 0
assert.callback => no value => no value
assert.exception => 0 => 0
assert.quiet_eval => 0 => 0
assert.warning => 1 => 1
auto_detect_line_endings => 0 => 0
default_socket_timeout => 60 => 60
from => no value => no value
url_rewriter.tags => a=href,area=href,frame=src,input=src,form=fakeentry => a=href,area=href,frame=src,input=src,form=fakeentry
user_agent => no value => no value

tidy

Tidy support => enabled
libTidy Release => 25 March 2009
Extension Version => 7.0.19 ($Id: 4e307eec06aa0ac776a415ba4d74290bfd9e0c73 $)

Directive => Local Value => Master Value
tidy.clean_output => no value => no value
tidy.default_config => no value => no value

xml

XML Support => active
XML Namespace Support => active
libxml2 Version => 2.9.4

xmlreader

XMLReader => enabled

xmlrpc

core library version => xmlrpc-epi v. 0.51
php extension version => 7.0.19
author => Dan Libby
homepage => http://xmlrpc-epi.sourceforge.net
open sourced by => Epinions.com

xmlwriter

XMLWriter => enabled

xsl

XSL => enabled
libxslt Version => 1.1.29
libxslt compiled against libxml Version => 2.9.4
EXSLT => enabled
libexslt Version => 1.1.29

zip

Zip => enabled
Zip version => 1.13.5
Libzip version => 0.11.2

zlib

ZLib Support => enabled
Stream Wrapper => compress.zlib://
Stream Filter => zlib.inflate, zlib.deflate
Compiled Version => 1.2.11
Linked Version => 1.2.11

Directive => Local Value => Master Value
zlib.output_compression => Off => Off
zlib.output_compression_level => -1 => -1
zlib.output_handler => no value => no value

Additional Modules

Module Name

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