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Extra crash-safety in decoding a DSS signature blob
author
simon
<simon@cda61777-01e9-0310-a592-d414129be87e>
Fri, 2 Mar 2001 17:13:16 +0000
(17:13 +0000)
committer
simon
<simon@cda61777-01e9-0310-a592-d414129be87e>
Fri, 2 Mar 2001 17:13:16 +0000
(17:13 +0000)
git-svn-id: svn://svn.tartarus.org/sgt/putty@968
cda61777
-01e9-0310-a592-
d414129be87e
sshdss.c
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diff --git
a/sshdss.c
b/sshdss.c
index
cf7fc3f
..
cef8e74
100644
(file)
--- a/
sshdss.c
+++ b/
sshdss.c
@@
-204,7
+204,7
@@
static int dss_verifysig(void *key, char *sig, int siglen,
*/
if (siglen != 40) { /* bug not present; read admin fields */
getstring(&sig, &siglen, &p, &slen);
- if (!p || memcmp(p, "ssh-dss", 7)) {
+ if (!p ||
slen != 7 ||
memcmp(p, "ssh-dss", 7)) {
return 0;
}
sig += 4, siglen -= 4; /* skip yet another length field */