diff options
| author | FdaSilvaYY <fdasilvayy@gmail.com> | 2018-09-30 22:39:38 +0200 |
|---|---|---|
| committer | Dr. Matthias St. Pierre <Matthias.St.Pierre@ncp-e.com> | 2018-12-22 18:11:42 +0100 |
| commit | da84249be6492ccfc5ecad32ac367fd06e9bdbef (patch) | |
| tree | 5634a5d851721679204373f407d2d9fe44c0b065 /crypto/asn1/a_sign.c | |
| parent | 39fc4c17c49d248e0757bac9aa8863d205c7ad12 (diff) | |
Coverity fix in some crypto/asn1 code
Call to i2d method returns an int value.
Fix:
CID 1338183 (#1 of 1): Improper use of negative value (NEGATIVE_RETURNS)
CID 1371691 (#1 of 1): Improper use of negative value (NEGATIVE_RETURNS)
CID 1371692 (#1 of 1): Improper use of negative value (NEGATIVE_RETURNS)
[extended tests]
Reviewed-by: Richard Levitte <levitte@openssl.org>
Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/7359)
Diffstat (limited to 'crypto/asn1/a_sign.c')
| -rw-r--r-- | crypto/asn1/a_sign.c | 32 |
1 files changed, 22 insertions, 10 deletions
diff --git a/crypto/asn1/a_sign.c b/crypto/asn1/a_sign.c index 9de4fb6158..97e8efcbe8 100644 --- a/crypto/asn1/a_sign.c +++ b/crypto/asn1/a_sign.c @@ -29,7 +29,8 @@ int ASN1_sign(i2d_of_void *i2d, X509_ALGOR *algor1, X509_ALGOR *algor2, { EVP_MD_CTX *ctx = EVP_MD_CTX_new(); unsigned char *p, *buf_in = NULL, *buf_out = NULL; - int i, inl = 0, outl = 0, outll = 0; + int i, inl = 0, outl = 0; + size_t inll = 0, outll = 0; X509_ALGOR *a; if (ctx == NULL) { @@ -70,10 +71,15 @@ int ASN1_sign(i2d_of_void *i2d, X509_ALGOR *algor1, X509_ALGOR *algor2, } } inl = i2d(data, NULL); - buf_in = OPENSSL_malloc((unsigned int)inl); + if (inl <= 0) { + ASN1err(ASN1_F_ASN1_SIGN, ERR_R_INTERNAL_ERROR); + goto err; + } + inll = (size_t)inl; + buf_in = OPENSSL_malloc(inll); outll = outl = EVP_PKEY_size(pkey); - buf_out = OPENSSL_malloc((unsigned int)outl); - if ((buf_in == NULL) || (buf_out == NULL)) { + buf_out = OPENSSL_malloc(outll); + if (buf_in == NULL || buf_out == NULL) { outl = 0; ASN1err(ASN1_F_ASN1_SIGN, ERR_R_MALLOC_FAILURE); goto err; @@ -101,7 +107,7 @@ int ASN1_sign(i2d_of_void *i2d, X509_ALGOR *algor1, X509_ALGOR *algor2, signature->flags |= ASN1_STRING_FLAG_BITS_LEFT; err: EVP_MD_CTX_free(ctx); - OPENSSL_clear_free((char *)buf_in, (unsigned int)inl); + OPENSSL_clear_free((char *)buf_in, inll); OPENSSL_clear_free((char *)buf_out, outll); return outl; } @@ -138,7 +144,7 @@ int ASN1_item_sign_ctx(const ASN1_ITEM *it, EVP_PKEY *pkey; unsigned char *buf_in = NULL, *buf_out = NULL; size_t inl = 0, outl = 0, outll = 0; - int signid, paramtype; + int signid, paramtype, buf_len = 0; int rv; type = EVP_MD_CTX_md(ctx); @@ -198,10 +204,16 @@ int ASN1_item_sign_ctx(const ASN1_ITEM *it, } - inl = ASN1_item_i2d(asn, &buf_in, it); + buf_len = ASN1_item_i2d(asn, &buf_in, it); + if (buf_len <= 0) { + outl = 0; + ASN1err(ASN1_F_ASN1_ITEM_SIGN_CTX, ERR_R_INTERNAL_ERROR); + goto err; + } + inl = buf_len; outll = outl = EVP_PKEY_size(pkey); - buf_out = OPENSSL_malloc((unsigned int)outl); - if ((buf_in == NULL) || (buf_out == NULL)) { + buf_out = OPENSSL_malloc(outll); + if (buf_in == NULL || buf_out == NULL) { outl = 0; ASN1err(ASN1_F_ASN1_ITEM_SIGN_CTX, ERR_R_MALLOC_FAILURE); goto err; @@ -223,7 +235,7 @@ int ASN1_item_sign_ctx(const ASN1_ITEM *it, signature->flags &= ~(ASN1_STRING_FLAG_BITS_LEFT | 0x07); signature->flags |= ASN1_STRING_FLAG_BITS_LEFT; err: - OPENSSL_clear_free((char *)buf_in, (unsigned int)inl); + OPENSSL_clear_free((char *)buf_in, inl); OPENSSL_clear_free((char *)buf_out, outll); return outl; } |