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authorTal Einat <taleinat+github@gmail.com>2018-06-12 12:46:22 (GMT)
committerGitHub <noreply@github.com>2018-06-12 12:46:22 (GMT)
commitc3f55be7dd012b7e92901627d0b31c21e983ccb4 (patch)
tree86fb2e7e33615aee453d73f27063a4ec345e89fa /Lib/email/errors.py
parent5a9820918077a65db90f24733edc8935c3e2130e (diff)
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bpo-27397: Make email module properly handle invalid-length base64 strings (#7583)
When attempting to base64-decode a payload of invalid length (1 mod 4), properly recognize and handle it. The given data will be returned as-is, i.e. not decoded, along with a new defect, InvalidBase64LengthDefect.
Diffstat (limited to 'Lib/email/errors.py')
-rw-r--r--Lib/email/errors.py3
1 files changed, 3 insertions, 0 deletions
diff --git a/Lib/email/errors.py b/Lib/email/errors.py
index 791239f..d28a680 100644
--- a/Lib/email/errors.py
+++ b/Lib/email/errors.py
@@ -73,6 +73,9 @@ class InvalidBase64PaddingDefect(MessageDefect):
class InvalidBase64CharactersDefect(MessageDefect):
"""base64 encoded sequence had characters not in base64 alphabet"""
+class InvalidBase64LengthDefect(MessageDefect):
+ """base64 encoded sequence had invalid length (1 mod 4)"""
+
# These errors are specific to header parsing.
class HeaderDefect(MessageDefect):