python-2.7: Security fix CVE-2016-5699

affect python-2.7 < 2.7.10

Signed-off-by: Armin Kuster <akuster@mvista.com>

2 files changed, 163 insertions, 0 deletions

diff --git a/meta/recipes-devtools/python/python/CVE-2016-5699.patch b/meta/recipes-devtools/python/python/CVE-2016-5699.patch
new file mode 100644
index 0000000000..6eba5351d0
--- /dev/null
+++ b/meta/recipes-devtools/python/python/CVE-2016-5699.patch
@@ -0,0 +1,162 @@
+
+# HG changeset patch
+# User Serhiy Storchaka <storchaka@gmail.com>
+# Date 1426151571 -7200
+# Node ID 1c45047c51020d46246385949d5c02e026d47320
+# Parent  36bd5add973285cce9d3ec7e068bbb20c9080565
+Issue #22928: Disabled HTTP header injections in httplib.
+Original patch by Demian Brecht.
+
+Index: Python-2.7.9/Lib/httplib.py
+===================================================================
+--- Python-2.7.9.orig/Lib/httplib.py
++++ Python-2.7.9/Lib/httplib.py
+@@ -68,6 +68,7 @@ Req-sent-unread-response       _CS_REQ_S
+ 
+ from array import array
+ import os
++import re
+ import socket
+ from sys import py3kwarning
+ from urlparse import urlsplit
+@@ -218,6 +219,34 @@ _MAXLINE = 65536
+ # maximum amount of headers accepted
+ _MAXHEADERS = 100
+ 
++# Header name/value ABNF (http://tools.ietf.org/html/rfc7230#section-3.2)
++#
++# VCHAR          = %x21-7E
++# obs-text       = %x80-FF
++# header-field   = field-name ":" OWS field-value OWS
++# field-name     = token
++# field-value    = *( field-content / obs-fold )
++# field-content  = field-vchar [ 1*( SP / HTAB ) field-vchar ]
++# field-vchar    = VCHAR / obs-text
++#
++# obs-fold       = CRLF 1*( SP / HTAB )
++#                ; obsolete line folding
++#                ; see Section 3.2.4
++
++# token          = 1*tchar
++#
++# tchar          = "!" / "#" / "$" / "%" / "&" / "'" / "*"
++#                / "+" / "-" / "." / "^" / "_" / "`" / "|" / "~"
++#                / DIGIT / ALPHA
++#                ; any VCHAR, except delimiters
++#
++# VCHAR defined in http://tools.ietf.org/html/rfc5234#appendix-B.1
++
++# the patterns for both name and value are more leniant than RFC
++# definitions to allow for backwards compatibility
++_is_legal_header_name = re.compile(r'\A[^:\s][^:\r\n]*\Z').match
++_is_illegal_header_value = re.compile(r'\n(?![ \t])|\r(?![ \t\n])').search
++
+ 
+ class HTTPMessage(mimetools.Message):
+ 
+@@ -978,7 +1007,16 @@ class HTTPConnection:
+         if self.__state != _CS_REQ_STARTED:
+             raise CannotSendHeader()
+ 
+-        hdr = '%s: %s' % (header, '\r\n\t'.join([str(v) for v in values]))
++        header = '%s' % header
++        if not _is_legal_header_name(header):
++            raise ValueError('Invalid header name %r' % (header,))
++
++        values = [str(v) for v in values]
++        for one_value in values:
++            if _is_illegal_header_value(one_value):
++                raise ValueError('Invalid header value %r' % (one_value,))
++
++        hdr = '%s: %s' % (header, '\r\n\t'.join(values))
+         self._output(hdr)
+ 
+     def endheaders(self, message_body=None):
+Index: Python-2.7.9/Lib/test/test_httplib.py
+===================================================================
+--- Python-2.7.9.orig/Lib/test/test_httplib.py
++++ Python-2.7.9/Lib/test/test_httplib.py
+@@ -138,6 +138,33 @@ class HeaderTests(TestCase):
+         conn.putheader('Content-length',42)
+         self.assertIn('Content-length: 42', conn._buffer)
+ 
++        conn.putheader('Foo', ' bar ')
++        self.assertIn(b'Foo:  bar ', conn._buffer)
++        conn.putheader('Bar', '\tbaz\t')
++        self.assertIn(b'Bar: \tbaz\t', conn._buffer)
++        conn.putheader('Authorization', 'Bearer mytoken')
++        self.assertIn(b'Authorization: Bearer mytoken', conn._buffer)
++        conn.putheader('IterHeader', 'IterA', 'IterB')
++        self.assertIn(b'IterHeader: IterA\r\n\tIterB', conn._buffer)
++        conn.putheader('LatinHeader', b'\xFF')
++        self.assertIn(b'LatinHeader: \xFF', conn._buffer)
++        conn.putheader('Utf8Header', b'\xc3\x80')
++        self.assertIn(b'Utf8Header: \xc3\x80', conn._buffer)
++        conn.putheader('C1-Control', b'next\x85line')
++        self.assertIn(b'C1-Control: next\x85line', conn._buffer)
++        conn.putheader('Embedded-Fold-Space', 'is\r\n allowed')
++        self.assertIn(b'Embedded-Fold-Space: is\r\n allowed', conn._buffer)
++        conn.putheader('Embedded-Fold-Tab', 'is\r\n\tallowed')
++        self.assertIn(b'Embedded-Fold-Tab: is\r\n\tallowed', conn._buffer)
++        conn.putheader('Key Space', 'value')
++        self.assertIn(b'Key Space: value', conn._buffer)
++        conn.putheader('KeySpace ', 'value')
++        self.assertIn(b'KeySpace : value', conn._buffer)
++        conn.putheader(b'Nonbreak\xa0Space', 'value')
++        self.assertIn(b'Nonbreak\xa0Space: value', conn._buffer)
++        conn.putheader(b'\xa0NonbreakSpace', 'value')
++        self.assertIn(b'\xa0NonbreakSpace: value', conn._buffer)
++
+     def test_ipv6host_header(self):
+         # Default host header on IPv6 transaction should wrapped by [] if
+         # its actual IPv6 address
+@@ -157,6 +184,35 @@ class HeaderTests(TestCase):
+         conn.request('GET', '/foo')
+         self.assertTrue(sock.data.startswith(expected))
+ 
++    def test_invalid_headers(self):
++        conn = httplib.HTTPConnection('example.com')
++        conn.sock = FakeSocket('')
++        conn.putrequest('GET', '/')
++
++        # http://tools.ietf.org/html/rfc7230#section-3.2.4, whitespace is no
++        # longer allowed in header names
++        cases = (
++            (b'Invalid\r\nName', b'ValidValue'),
++            (b'Invalid\rName', b'ValidValue'),
++            (b'Invalid\nName', b'ValidValue'),
++            (b'\r\nInvalidName', b'ValidValue'),
++            (b'\rInvalidName', b'ValidValue'),
++            (b'\nInvalidName', b'ValidValue'),
++            (b' InvalidName', b'ValidValue'),
++            (b'\tInvalidName', b'ValidValue'),
++            (b'Invalid:Name', b'ValidValue'),
++            (b':InvalidName', b'ValidValue'),
++            (b'ValidName', b'Invalid\r\nValue'),
++            (b'ValidName', b'Invalid\rValue'),
++            (b'ValidName', b'Invalid\nValue'),
++            (b'ValidName', b'InvalidValue\r\n'),
++            (b'ValidName', b'InvalidValue\r'),
++            (b'ValidName', b'InvalidValue\n'),
++        )
++        for name, value in cases:
++            with self.assertRaisesRegexp(ValueError, 'Invalid header'):
++                conn.putheader(name, value)
++
+ 
+ class BasicTest(TestCase):
+     def test_status_lines(self):
+Index: Python-2.7.9/Misc/NEWS
+===================================================================
+--- Python-2.7.9.orig/Misc/NEWS
++++ Python-2.7.9/Misc/NEWS
+@@ -13,6 +13,9 @@ What's New in Python 2.7.9?
+ Library
+ -------
+ 
++- Issue #22928: Disabled HTTP header injections in httplib.
++  Original patch by Demian Brecht.
++
+ - Issue #22959: Remove the *check_hostname* parameter of
+   httplib.HTTPSConnection. The *context* parameter should be used instead.
+ 
diff --git a/meta/recipes-devtools/python/python_2.7.9.bb b/meta/recipes-devtools/python/python_2.7.9.bb
index 3b3e7ad707..1f0169bd41 100644
--- a/meta/recipes-devtools/python/python_2.7.9.bb
+++ b/meta/recipes-devtools/python/python_2.7.9.bb
@@ -28,6 +28,7 @@ SRC_URI += "\
   file://avoid_parallel_make_races_on_pgen.patch \
   file://CVE-2016-0772.patch \
   file://CVE-2016-5636.patch \
+  file://CVE-2016-5699.patch \
 "
 
 S = "${WORKDIR}/Python-${PV}"