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Category:   Application (Generic)  >   Python Vendors:   Python.org
CPython Integer Overflow in PyString_DecodeEscape() Lets Remote Users Execute Arbitrary Code
SecurityTracker Alert ID:  1039890
SecurityTracker URL:  http://securitytracker.com/id/1039890
CVE Reference:   CVE-2017-1000158   (Links to External Site)
Date:  Nov 29 2017
Impact:   Execution of arbitrary code via network, User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 2.7; possibly other versions
Description:   A vulnerability was reported in CPython. A remote user can cause arbitrary code to be executed on the target user's system.

A remote user can create a specially crafted Python source code file that, when loaded by the target user, will trigger an integer overflow in the PyString_DecodeEscape() function in 'stringobject.c' and execute arbitrary code on the target system.

Jay Bosamiya reported this vulnerability.

Impact:   A remote user can create Python source code that, when loaded by the target user, will execute arbitrary code on the target user's system.
Solution:   The vendor has issued a source code fix, available at:

https://github.com/python/cpython/commit/c3c9db89273fabc62ea1b48389d9a3000c1c03ae

The vendor advisory is available at:

https://bugs.python.org/issue30657

Vendor URL:  bugs.python.org/issue30657 (Links to External Site)
Cause:   Boundary error
Underlying OS:  Linux (Any), UNIX (Any), Windows (Any)

Message History:   None.


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