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56 lines
2.0 KiB
56 lines
2.0 KiB
7 years ago
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diff -up openssl-1.0.1e/crypto/pkcs7/pk7_doit.c.missing-content openssl-1.0.1e/crypto/pkcs7/pk7_doit.c
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--- openssl-1.0.1e/crypto/pkcs7/pk7_doit.c.missing-content 2015-05-25 12:03:41.000000000 +0200
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+++ openssl-1.0.1e/crypto/pkcs7/pk7_doit.c 2015-06-09 15:21:21.377951520 +0200
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@@ -472,6 +472,12 @@ BIO *PKCS7_dataDecode(PKCS7 *p7, EVP_PKE
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switch (i)
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{
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case NID_pkcs7_signed:
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+ /*
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+ * p7->d.sign->contents is a PKCS7 structure consisting of a contentType
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+ * field and optional content.
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+ * data_body is NULL if that structure has no (=detached) content
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+ * or if the contentType is wrong (i.e., not "data").
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+ */
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data_body=PKCS7_get_octet_string(p7->d.sign->contents);
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if (!PKCS7_is_detached(p7) && data_body == NULL)
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{
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@@ -484,6 +490,7 @@ BIO *PKCS7_dataDecode(PKCS7 *p7, EVP_PKE
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case NID_pkcs7_signedAndEnveloped:
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rsk=p7->d.signed_and_enveloped->recipientinfo;
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md_sk=p7->d.signed_and_enveloped->md_algs;
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+ /* data_body is NULL if the optional EncryptedContent is missing. */
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data_body=p7->d.signed_and_enveloped->enc_data->enc_data;
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enc_alg=p7->d.signed_and_enveloped->enc_data->algorithm;
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evp_cipher=EVP_get_cipherbyobj(enc_alg->algorithm);
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@@ -496,6 +503,7 @@ BIO *PKCS7_dataDecode(PKCS7 *p7, EVP_PKE
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case NID_pkcs7_enveloped:
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rsk=p7->d.enveloped->recipientinfo;
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enc_alg=p7->d.enveloped->enc_data->algorithm;
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+ /* data_body is NULL if the optional EncryptedContent is missing. */
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data_body=p7->d.enveloped->enc_data->enc_data;
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evp_cipher=EVP_get_cipherbyobj(enc_alg->algorithm);
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if (evp_cipher == NULL)
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@@ -509,6 +517,13 @@ BIO *PKCS7_dataDecode(PKCS7 *p7, EVP_PKE
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goto err;
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}
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+ /* Detached content must be supplied via in_bio instead. */
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+ if (data_body == NULL && in_bio == NULL)
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+ {
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+ PKCS7err(PKCS7_F_PKCS7_DATADECODE, PKCS7_R_NO_CONTENT);
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+ goto err;
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+ }
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+
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/* We will be checking the signature */
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if (md_sk != NULL)
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{
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@@ -665,7 +680,7 @@ BIO *PKCS7_dataDecode(PKCS7 *p7, EVP_PKE
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}
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#if 1
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- if (PKCS7_is_detached(p7) || (in_bio != NULL))
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+ if (in_bio != NULL)
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{
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bio=in_bio;
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}
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