Buffer Overflow with Python 2.5 on Vista in import site

[Fuzzyman]

A very odd error with Python 2.5 (both 2.5.1 and 2.5.2 from the
official msi installers and running on Vista under Parallels on the
Mac).

'import site' fails due to a string in sys.path that contains a huge
number of null bytes.

The error is actually in ntpath - I adjusted it to print the paths it
is working with and a string on encountering the bad path.

Because 'import site' is executed twice with the following code I
snipped the first dump and only print the one with the traceback:

C:\Users\Admini strator>python -c "import site"

[snip]

'import site' failed; use -v for traceback
set(['c:\\python25\\ lib\\plat-win', 'c:\\windows\\s ystem32\
\python25.zip', 'c:\\
python25', 'c:\\python25\\ lib\\lib-tk', 'c:\\users\\adm inistrator', 'c:
\\python2
5\\dlls', 'c:\\python25\\ lib', 'c:\\python25\\ lib\\site-packages'])

*************** ***** BAD PATH *************** *****
"C:\\Python25\\ lib\\site-packages\\\x00\ x05\x16\x07\x00 \x02\x00\x00Mac
OS X
\x00\x02\x00\x0 0\x00\t\x00\x00 \x002\x00\x00\x 0e
\xb0\x00\x00\x0 0\x02\x00\x00\x
0e\xe2\x00\x00\ x01\x1e
\x00\x00\x00\x0 0\x00\x00\x00\x 00\x00\x00\x00\ x00\x00\x00\x
00\x00\x00\x00\ x00\x00\x00\x00 \x00\x00\x00\x0 0\x00\x00\x00\x 00\x00\x00\x00\ x00AT
TR\x00\x00\x00! \x00\x00\x0e\xe 2\x00\x00\x00\x 98\x00\x00\x00
\x00\x00\x00\x0 0\x00
\x00\x00\x00\x0 0\x00\x00\x00\x 00\x00\x00\x01\ x00\x00\x00\x98 \x00\x00\x00
\x00\x0
0\x15com.macrom ates.caret\x00x \x9c\xab\xe6R\x 00\x82\xe4\xfc\ x9c
\xd2\xdc<\x05[\x0
5\x03k0?'3/\x15\xc2\xab\x0 5\x00\x8b\x99\x 08\x1d
\x00\x00\x00\x0 0\x00\x00\x00\x 00\
x00\x00\x00\x00 \x00\x00\x00\x0 0\x00\x00\x00\x 00\x00\x00\x00\ x00\x00\x00\x00 \x00\
x00\x00\x00\x00 \x00\x00\x00\x0 0\x00\x00\x00\x 00\x00\x00\x00\ x00\x00\x00\x00 \x00\

[snip a load of null bytes]

x00\x00\x00\x00 \x00\x00\x00\x0 0\x00\x00\x00\x 00\x00\x00\x00\ x00\x00\x00\x00 \x00\
x01\x00\x00\x00 \x01\x00\x00\x0 0\x00\x00\x00\x 00\x00\x1eThis resource
fork intent
ionally left blank
\x00\x00\x00\x0 0\x00\x00\x00\x 00\x00\x00\x00\ x00\x00\x00\x0

[snip a load more null bytes]

0\x00\x00\x00\x 00\x00\x00\x00\ x00\x00\x00\x00 \x00\x00\x00\x0 0\x00\x00\x00\x 00\x0
0\x00\x01\x00\x 00\x00\x01\x00\ x00\x00\x00\x00 \x00\x00\x00\x1 e
\x00\x00\x00\x0 0\x0
0\x00\x00\x00\x 00\x1c\x00\x1e\ xff\xff"
Traceback (most recent call last):
File "<string>", line 1, in <module>
File "C:\Python25\li b\site.py", line 417, in <module>
main()
File "C:\Python25\li b\site.py", line 402, in main
paths_in_sys = addsitepackages (paths_in_sys)
File "C:\Python25\li b\site.py", line 206, in addsitepackages
addsitedir(site dir, known_paths)
File "C:\Python25\li b\site.py", line 169, in addsitedir
addpackage(site dir, name, known_paths)
File "C:\Python25\li b\site.py", line 141, in addpackage
dir, dircase = makepath(sitedi r, line)
File "C:\Python25\li b\site.py", line 67, in makepath
dir = os.path.abspath (os.path.join(* paths))
File "C:\Python25\li b\ntpath.py", line 500, in abspath
path = _getfullpathnam e(path)
TypeError: _getfullpathnam e() argument 1 must be (buffer overflow),
not str


Odd. Anyone got any clues?

Michael Foord

http://www.ironpythoninaction.com

[Gabriel Genellina]

Re: Buffer Overflow with Python 2.5 on Vista in import site

En Sat, 29 Mar 2008 17:34:27 -0300, Fuzzyman <fuzzyman@gmail .comescribió:

A very odd error with Python 2.5 (both 2.5.1 and 2.5.2 from the
official msi installers and running on Vista under Parallels on the
Mac).

It may be actually a Parallels issue - I've installed 2.5.1 on Vista (just
once, on a real PC) and it worked fine. Anyway a better place for bug
reports is bugs.python.org

Mmm, maybe you should check all your .pth files - looks like this strange
path comes from one of them.

--
Gabriel Genellina

[Fuzzyman]

Re: Buffer Overflow with Python 2.5 on Vista in import site

On Mar 30, 3:53 am, "Gabriel Genellina" <gagsl-...@yahoo.com.a r>
wrote:

En Sat, 29 Mar 2008 17:34:27 -0300, Fuzzyman <fuzzy...@gmail .comescribió:
>

A very odd error with Python 2.5 (both 2.5.1 and 2.5.2 from the
official msi installers and running on Vista under Parallels on the
Mac).

>
It may be actually a Parallels issue - I've installed 2.5.1 on Vista (just
once, on a real PC) and it worked fine. Anyway a better place for bug
reports is bugs.python.org
>
Mmm, maybe you should check all your .pth files - looks like this strange
path comes from one of them.

I think it comes from the '._something.pt h' that Textmate created as a
temporary file when I edited a 'pth' file. The 'macromates' text in
their is from textmate. I'm not sure if it is Mac specific or Texmate
specific, but those temp files are really annoying.

Thanks.

Michael

http://www.ironpythoninaction.com/

>
--
Gabriel Genellina