Apply by doing: cd /usr/src patch -p0 < 011_openssl.patch And then rebuild and install OpenSSL: cd lib/libssl make obj make depend make make install Index: lib/libssl/src/crypto/rsa/rsa_sign.c =================================================================== RCS file: /cvs/src/lib/libssl/src/crypto/rsa/rsa_sign.c,v retrieving revision 1.7 retrieving revision 1.7.4.1 diff -u -p -r1.7 -r1.7.4.1 --- lib/libssl/src/crypto/rsa/rsa_sign.c 29 Apr 2005 05:39:26 -0000 1.7 +++ lib/libssl/src/crypto/rsa/rsa_sign.c 9 Sep 2006 01:23:16 -0000 1.7.4.1 @@ -185,6 +185,23 @@ int RSA_verify(int dtype, const unsigned sig=d2i_X509_SIG(NULL,&p,(long)i); if (sig == NULL) goto err; + + /* Excess data can be used to create forgeries */ + if(p != s+i) + { + RSAerr(RSA_F_RSA_VERIFY,RSA_R_BAD_SIGNATURE); + goto err; + } + + /* Parameters to the signature algorithm can also be used to + create forgeries */ + if(sig->algor->parameter + && ASN1_TYPE_get(sig->algor->parameter) != V_ASN1_NULL) + { + RSAerr(RSA_F_RSA_VERIFY,RSA_R_BAD_SIGNATURE); + goto err; + } + sigtype=OBJ_obj2nid(sig->algor->algorithm);