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|
b7e076 |
diff --git a/Lib/email/_header_value_parser.py b/Lib/email/_header_value_parser.py
|
|
|
b7e076 |
index 737951e4b1b1..bc9c9b6241d4 100644
|
|
|
b7e076 |
--- a/Lib/email/_header_value_parser.py
|
|
|
b7e076 |
+++ b/Lib/email/_header_value_parser.py
|
|
|
b7e076 |
@@ -1561,6 +1561,8 @@ def get_domain(value):
|
|
|
b7e076 |
token, value = get_dot_atom(value)
|
|
|
b7e076 |
except errors.HeaderParseError:
|
|
|
b7e076 |
token, value = get_atom(value)
|
|
|
b7e076 |
+ if value and value[0] == '@':
|
|
|
b7e076 |
+ raise errors.HeaderParseError('Invalid Domain')
|
|
|
b7e076 |
if leader is not None:
|
|
|
b7e076 |
token[:0] = [leader]
|
|
|
b7e076 |
domain.append(token)
|
|
|
b7e076 |
diff --git a/Lib/email/_parseaddr.py b/Lib/email/_parseaddr.py
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|
|
b7e076 |
index cdfa3729adc7..41ff6f8c000d 100644
|
|
|
b7e076 |
--- a/Lib/email/_parseaddr.py
|
|
|
b7e076 |
+++ b/Lib/email/_parseaddr.py
|
|
|
b7e076 |
@@ -379,7 +379,12 @@ def getaddrspec(self):
|
|
|
b7e076 |
aslist.append('@')
|
|
|
b7e076 |
self.pos += 1
|
|
|
b7e076 |
self.gotonext()
|
|
|
b7e076 |
- return EMPTYSTRING.join(aslist) + self.getdomain()
|
|
|
b7e076 |
+ domain = self.getdomain()
|
|
|
b7e076 |
+ if not domain:
|
|
|
b7e076 |
+ # Invalid domain, return an empty address instead of returning a
|
|
|
b7e076 |
+ # local part to denote failed parsing.
|
|
|
b7e076 |
+ return EMPTYSTRING
|
|
|
b7e076 |
+ return EMPTYSTRING.join(aslist) + domain
|
|
|
b7e076 |
|
|
|
b7e076 |
def getdomain(self):
|
|
|
b7e076 |
"""Get the complete domain name from an address."""
|
|
|
b7e076 |
@@ -394,6 +399,10 @@ def getdomain(self):
|
|
|
b7e076 |
elif self.field[self.pos] == '.':
|
|
|
b7e076 |
self.pos += 1
|
|
|
b7e076 |
sdlist.append('.')
|
|
|
b7e076 |
+ elif self.field[self.pos] == '@':
|
|
|
b7e076 |
+ # bpo-34155: Don't parse domains with two `@` like
|
|
|
b7e076 |
+ # `a@malicious.org@important.com`.
|
|
|
b7e076 |
+ return EMPTYSTRING
|
|
|
b7e076 |
elif self.field[self.pos] in self.atomends:
|
|
|
b7e076 |
break
|
|
|
b7e076 |
else:
|
|
|
b7e076 |
diff --git a/Lib/test/test_email/test__header_value_parser.py b/Lib/test/test_email/test__header_value_parser.py
|
|
|
b7e076 |
index a2c900fa7fd2..02ef3e1006c6 100644
|
|
|
b7e076 |
--- a/Lib/test/test_email/test__header_value_parser.py
|
|
|
b7e076 |
+++ b/Lib/test/test_email/test__header_value_parser.py
|
|
|
b7e076 |
@@ -1418,6 +1418,16 @@ def test_get_addr_spec_dot_atom(self):
|
|
|
b7e076 |
self.assertEqual(addr_spec.domain, 'example.com')
|
|
|
b7e076 |
self.assertEqual(addr_spec.addr_spec, 'star.a.star@example.com')
|
|
|
b7e076 |
|
|
|
b7e076 |
+ def test_get_addr_spec_multiple_domains(self):
|
|
|
b7e076 |
+ with self.assertRaises(errors.HeaderParseError):
|
|
|
b7e076 |
+ parser.get_addr_spec('star@a.star@example.com')
|
|
|
b7e076 |
+
|
|
|
b7e076 |
+ with self.assertRaises(errors.HeaderParseError):
|
|
|
b7e076 |
+ parser.get_addr_spec('star@a@example.com')
|
|
|
b7e076 |
+
|
|
|
b7e076 |
+ with self.assertRaises(errors.HeaderParseError):
|
|
|
b7e076 |
+ parser.get_addr_spec('star@172.17.0.1@example.com')
|
|
|
b7e076 |
+
|
|
|
b7e076 |
# get_obs_route
|
|
|
b7e076 |
|
|
|
b7e076 |
def test_get_obs_route_simple(self):
|
|
|
b7e076 |
diff --git a/Lib/test/test_email/test_email.py b/Lib/test/test_email/test_email.py
|
|
|
b7e076 |
index f97ccc6711cc..68d052279987 100644
|
|
|
b7e076 |
--- a/Lib/test/test_email/test_email.py
|
|
|
b7e076 |
+++ b/Lib/test/test_email/test_email.py
|
|
|
b7e076 |
@@ -3035,6 +3035,20 @@ def test_parseaddr_empty(self):
|
|
|
b7e076 |
self.assertEqual(utils.parseaddr('<>'), ('', ''))
|
|
|
b7e076 |
self.assertEqual(utils.formataddr(utils.parseaddr('<>')), '')
|
|
|
b7e076 |
|
|
|
b7e076 |
+ def test_parseaddr_multiple_domains(self):
|
|
|
b7e076 |
+ self.assertEqual(
|
|
|
b7e076 |
+ utils.parseaddr('a@b@c'),
|
|
|
b7e076 |
+ ('', '')
|
|
|
b7e076 |
+ )
|
|
|
b7e076 |
+ self.assertEqual(
|
|
|
b7e076 |
+ utils.parseaddr('a@b.c@c'),
|
|
|
b7e076 |
+ ('', '')
|
|
|
b7e076 |
+ )
|
|
|
b7e076 |
+ self.assertEqual(
|
|
|
b7e076 |
+ utils.parseaddr('a@172.17.0.1@c'),
|
|
|
b7e076 |
+ ('', '')
|
|
|
b7e076 |
+ )
|
|
|
b7e076 |
+
|
|
|
b7e076 |
def test_noquote_dump(self):
|
|
|
b7e076 |
self.assertEqual(
|
|
|
b7e076 |
utils.formataddr(('A Silly Person', 'person@dom.ain')),
|
|
|
b7e076 |
diff --git a/Misc/NEWS.d/next/Security/2019-05-04-13-33-37.bpo-34155.MJll68.rst b/Misc/NEWS.d/next/Security/2019-05-04-13-33-37.bpo-34155.MJll68.rst
|
|
|
b7e076 |
new file mode 100644
|
|
|
b7e076 |
index 000000000000..50292e29ed1d
|
|
|
b7e076 |
--- /dev/null
|
|
|
b7e076 |
+++ b/Misc/NEWS.d/next/Security/2019-05-04-13-33-37.bpo-34155.MJll68.rst
|
|
|
b7e076 |
@@ -0,0 +1 @@
|
|
|
b7e076 |
+Fix parsing of invalid email addresses with more than one ``@`` (e.g. a@b@c.com.) to not return the part before 2nd ``@`` as valid email address. Patch by maxking & jpic.
|