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authorMike DePaulo <mikedep333@gmail.com>2015-01-10 12:26:41 -0500
committerMike DePaulo <mikedep333@gmail.com>2015-01-10 15:20:57 -0500
commitee914bf036b78dcbde9bf694794c15482d721028 (patch)
tree13793fdc02dbf47bd4dd5e93861bccac71d58887 /openssl/crypto/dsa
parentfaa5026e540d03f858265b2796054d685f687383 (diff)
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Update openssl to version openssl-1.0.1k
Conflicts: openssl/Makefile
Diffstat (limited to 'openssl/crypto/dsa')
-rw-r--r--openssl/crypto/dsa/dsa_asn1.c14
1 files changed, 13 insertions, 1 deletions
diff --git a/openssl/crypto/dsa/dsa_asn1.c b/openssl/crypto/dsa/dsa_asn1.c
index 605853437..473af873e 100644
--- a/openssl/crypto/dsa/dsa_asn1.c
+++ b/openssl/crypto/dsa/dsa_asn1.c
@@ -176,13 +176,25 @@ int DSA_verify(int type, const unsigned char *dgst, int dgst_len,
const unsigned char *sigbuf, int siglen, DSA *dsa)
{
DSA_SIG *s;
+ const unsigned char *p = sigbuf;
+ unsigned char *der = NULL;
+ int derlen = -1;
int ret=-1;
s = DSA_SIG_new();
if (s == NULL) return(ret);
- if (d2i_DSA_SIG(&s,&sigbuf,siglen) == NULL) goto err;
+ if (d2i_DSA_SIG(&s,&p,siglen) == NULL) goto err;
+ /* Ensure signature uses DER and doesn't have trailing garbage */
+ derlen = i2d_DSA_SIG(s, &der);
+ if (derlen != siglen || memcmp(sigbuf, der, derlen))
+ goto err;
ret=DSA_do_verify(dgst,dgst_len,s,dsa);
err:
+ if (derlen > 0)
+ {
+ OPENSSL_cleanse(der, derlen);
+ OPENSSL_free(der);
+ }
DSA_SIG_free(s);
return(ret);
}