The sandbox environment in the Google App Engine Python SDK before 1.5.4 does not properly prevent os.popen calls, which allows local users to bypass intended access restrictions and execute arbitrary commands via a devappserver.RestrictedPathFunction.originalos reference within the code parameter to ah/admin/interactive/execute, a different vulnerability than CVE-2011-1364.
The FakeFile implementation in the sandbox environment in the Google App Engine Python SDK before 1.5.4 does not properly control the opening of files, which allows local users to bypass intended access restrictions and create arbitrary files via ALLOWEDMODES and ALLOWEDDIRS changes within the code parameter to ah/admin/interactive/execute, a different vulnerability than CVE-2011-1364.