dovecot-2.0: UTF-8 string validity was checked incorrectly.
dovecot at dovecot.org
dovecot at dovecot.org
Wed Aug 18 17:20:07 EEST 2010
details: http://hg.dovecot.org/dovecot-2.0/rev/8c46bf2c5176
changeset: 12007:8c46bf2c5176
user: Timo Sirainen <tss at iki.fi>
date: Wed Aug 18 15:17:40 2010 +0100
description:
UTF-8 string validity was checked incorrectly.
diffstat:
src/lib/unichar.c | 4 +++-
1 files changed, 3 insertions(+), 1 deletions(-)
diffs (16 lines):
diff -r 3ba227176cde -r 8c46bf2c5176 src/lib/unichar.c
--- a/src/lib/unichar.c Tue Aug 17 19:16:03 2010 +0100
+++ b/src/lib/unichar.c Wed Aug 18 15:17:40 2010 +0100
@@ -322,9 +322,11 @@
if (unlikely(len > size || len == 1))
return 0;
+ /* the rest of the chars should be in 0x80..0xbf range.
+ anything else is start of a sequence or invalid */
for (i = 1; i < len; i++) {
if (unlikely(uni_utf8_char_bytes(input[i]) != len-i ||
- input[i] < 192-2))
+ input[i] < 0x80 || input[i] >= 0xbf))
return 0;
}
return len;
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