From: Guido van Rossum <guido@python.org>
Date: Wed, 23 Dec 1998 21:58:38 +0000 (+0000)
Subject: Avoid crash in parsedate_tz() on certain invalid dates -- when the
X-Git-Tag: v1.5.2b2~504
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=99e11315360d700ca7abb251e3a6774de6f46be1;p=python

Avoid crash in parsedate_tz() on certain invalid dates -- when the
field assumed to be the time is in fact the year, the resulting list
doesn't have enough items, and this isn't checked for.  Return None
instead.
---

diff --git a/Lib/rfc822.py b/Lib/rfc822.py
index 2e97ef4daf..b466fae3a6 100644
--- a/Lib/rfc822.py
+++ b/Lib/rfc822.py
@@ -800,8 +800,10 @@ def parsedate_tz(data):
     if len(tm) == 2:
         [thh, tmm] = tm
         tss = '0'
-    else:
+    elif len(tm) == 3:
         [thh, tmm, tss] = tm
+    else:
+        return None
     try:
         yy = string.atoi(yy)
         dd = string.atoi(dd)