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Merged revisions 168603 via svnmerge from

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https://origsvn.digium.com/svn/asterisk/branches/1.4

........
  r168603 | tilghman | 2009-01-14 13:02:55 -0600 (Wed, 14 Jan 2009) | 7 lines
  
  Don't read into a buffer without first checking if a value is beyond the end.
  (closes issue #13600)
   Reported by: atis
   Patches: 
         20090106__bug13600.diff.txt uploaded by Corydon76 (license 14)
   Tested by: atis
........


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@168604 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Tilghman Lesher
2009-01-14 19:11:14 +00:00
parent 9c10ccd9fd
commit 72fc03b6c6
1 changed files with 3 additions and 5 deletions
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6
main/udptl.c
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@@ -176,15 +176,15 @@ static inline int udptl_debug_test_addr(struct sockaddr_in *addr)
static int decode_length(uint8_t *buf, int limit, int *len, int *pvalue)
{
if ((buf[*len] & 0x80) == 0) {
if (*len >= limit)
return -1;
if ((buf[*len] & 0x80) == 0) {
*pvalue = buf[*len];
(*len)++;
return 0;
}
if ((buf[*len] & 0x40) == 0) {
if (*len >= limit - 1)
if (*len == limit - 1)
return -1;
*pvalue = (buf[*len] & 0x3F) << 8;
(*len)++;
@@ -192,8 +192,6 @@ static int decode_length(uint8_t *buf, int limit, int *len, int *pvalue)
(*len)++;
return 0;
}
if (*len >= limit)
return -1;
*pvalue = (buf[*len] & 0x3F) << 14;
(*len)++;
/* Indicate we have a fragment */