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-rw-r--r--Lib/http/server.py10
-rw-r--r--Lib/test/test_httpservers.py16
-rw-r--r--Misc/ACKS1
-rw-r--r--Misc/NEWS3
4 files changed, 25 insertions, 5 deletions
diff --git a/Lib/http/server.py b/Lib/http/server.py
index c98df19..2a95028 100644
--- a/Lib/http/server.py
+++ b/Lib/http/server.py
@@ -1000,16 +1000,16 @@ class CGIHTTPRequestHandler(SimpleHTTPRequestHandler):
def run_cgi(self):
"""Execute a CGI script."""
dir, rest = self.cgi_info
-
- i = rest.find('/')
+ path = dir + '/' + rest
+ i = path.find('/', len(dir)+1)
while i >= 0:
- nextdir = rest[:i]
- nextrest = rest[i+1:]
+ nextdir = path[:i]
+ nextrest = path[i+1:]
scriptdir = self.translate_path(nextdir)
if os.path.isdir(scriptdir):
dir, rest = nextdir, nextrest
- i = rest.find('/')
+ i = path.find('/', len(dir)+1)
else:
break
diff --git a/Lib/test/test_httpservers.py b/Lib/test/test_httpservers.py
index 15dec1c..0f4b9ba 100644
--- a/Lib/test/test_httpservers.py
+++ b/Lib/test/test_httpservers.py
@@ -346,10 +346,13 @@ class CGIHTTPServerTestCase(BaseTestCase):
self.cwd = os.getcwd()
self.parent_dir = tempfile.mkdtemp()
self.cgi_dir = os.path.join(self.parent_dir, 'cgi-bin')
+ self.cgi_child_dir = os.path.join(self.cgi_dir, 'child-dir')
os.mkdir(self.cgi_dir)
+ os.mkdir(self.cgi_child_dir)
self.nocgi_path = None
self.file1_path = None
self.file2_path = None
+ self.file3_path = None
# The shebang line should be pure ASCII: use symlink if possible.
# See issue #7668.
@@ -383,6 +386,11 @@ class CGIHTTPServerTestCase(BaseTestCase):
file2.write(cgi_file2 % self.pythonexe)
os.chmod(self.file2_path, 0o777)
+ self.file3_path = os.path.join(self.cgi_child_dir, 'file3.py')
+ with open(self.file3_path, 'w', encoding='utf-8') as file3:
+ file3.write(cgi_file1 % self.pythonexe)
+ os.chmod(self.file3_path, 0o777)
+
os.chdir(self.parent_dir)
def tearDown(self):
@@ -396,6 +404,9 @@ class CGIHTTPServerTestCase(BaseTestCase):
os.remove(self.file1_path)
if self.file2_path:
os.remove(self.file2_path)
+ if self.file3_path:
+ os.remove(self.file3_path)
+ os.rmdir(self.cgi_child_dir)
os.rmdir(self.cgi_dir)
os.rmdir(self.parent_dir)
finally:
@@ -491,6 +502,11 @@ class CGIHTTPServerTestCase(BaseTestCase):
self.assertEqual((b'Hello World' + self.linesep, 'text/html', 200),
(res.read(), res.getheader('Content-type'), res.status))
+ def test_nested_cgi_path_issue21323(self):
+ res = self.request('/cgi-bin/child-dir/file3.py')
+ self.assertEqual((b'Hello World' + self.linesep, 'text/html', 200),
+ (res.read(), res.getheader('Content-type'), res.status))
+
class SocketlessRequestHandler(SimpleHTTPRequestHandler):
def __init__(self):
diff --git a/Misc/ACKS b/Misc/ACKS
index 204fd88..16ed78f 100644
--- a/Misc/ACKS
+++ b/Misc/ACKS
@@ -201,6 +201,7 @@ Tarn Weisner Burton
Lee Busby
Katherine Busch
Ralph Butler
+Zach Byrne
Nicolas Cadou
Jp Calderone
Arnaud Calmettes
diff --git a/Misc/NEWS b/Misc/NEWS
index f8c6abc..9fc2ca9 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -573,6 +573,9 @@ Library
- Issue #21923: Prevent AttributeError in distutils.sysconfig.customize_compiler
due to possible uninitialized _config_vars.
+- Issue #21323: Fix http.server to again handle scripts in CGI subdirectories,
+ broken by the fix for security issue #19435. Patch by Zach Byrne.
+
Extension Modules
-----------------