dovecot-2.2: lib-imap: Make sure imap_utf7_to_utf8() doesn't acc...
dovecot at dovecot.org
dovecot at dovecot.org
Wed Jun 5 17:50:10 EEST 2013
details: http://hg.dovecot.org/dovecot-2.2/rev/b3c6f97ad3ac
changeset: 16456:b3c6f97ad3ac
user: Timo Sirainen <tss at iki.fi>
date: Wed Jun 05 17:49:46 2013 +0300
description:
lib-imap: Make sure imap_utf7_to_utf8() doesn't access invalid input string out of bounds.
diffstat:
src/lib-imap/imap-utf7.c | 4 +++-
1 files changed, 3 insertions(+), 1 deletions(-)
diffs (15 lines):
diff -r a38a7b5fb195 -r b3c6f97ad3ac src/lib-imap/imap-utf7.c
--- a/src/lib-imap/imap-utf7.c Wed Jun 05 17:48:48 2013 +0300
+++ b/src/lib-imap/imap-utf7.c Wed Jun 05 17:49:46 2013 +0300
@@ -179,8 +179,10 @@
while (*src != '-') {
input[0] = imap_b64dec[(uint8_t)src[0]];
+ if (input[0] == 0xff)
+ return -1;
input[1] = imap_b64dec[(uint8_t)src[1]];
- if (input[0] == 0xff || input[1] == 0xff)
+ if (input[1] == 0xff)
return -1;
output[outpos % 4] = (input[0] << 2) | (input[1] >> 4);
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