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Add some missing bounds checks in signature verification routines.
[sgt/putty]
/
sshdss.c
diff --git
a/sshdss.c
b/sshdss.c
index
532c13f
..
2b19a92
100644
(file)
--- a/
sshdss.c
+++ b/
sshdss.c
@@
-72,6
+72,9
@@
static Bignum get160(char **data, int *datalen)
{
Bignum b;
+ if (*datalen < 20)
+ return NULL;
+
b = bignum_from_bytes((unsigned char *)*data, 20);
*data += 20;
*datalen -= 20;