diff options
Diffstat (limited to 'crypto/pem')
| -rw-r--r-- | crypto/pem/pem_lib.c | 2 | ||||
| -rw-r--r-- | crypto/pem/pvkfmt.c | 7 |
2 files changed, 8 insertions, 1 deletions
diff --git a/crypto/pem/pem_lib.c b/crypto/pem/pem_lib.c index a29821a..fe881d6 100644 --- a/crypto/pem/pem_lib.c +++ b/crypto/pem/pem_lib.c @@ -348,7 +348,7 @@ int PEM_ASN1_write_bio(i2d_of_void *i2d, const char *name, BIO *bp, if (enc != NULL) { objstr = OBJ_nid2sn(EVP_CIPHER_nid(enc)); - if (objstr == NULL) { + if (objstr == NULL || EVP_CIPHER_iv_length(enc) == 0) { PEMerr(PEM_F_PEM_ASN1_WRITE_BIO, PEM_R_UNSUPPORTED_CIPHER); goto err; } diff --git a/crypto/pem/pvkfmt.c b/crypto/pem/pvkfmt.c index 82d4527..61864468 100644 --- a/crypto/pem/pvkfmt.c +++ b/crypto/pem/pvkfmt.c @@ -131,6 +131,10 @@ static int read_lebn(const unsigned char **in, unsigned int nbyte, BIGNUM **r) # define MS_PVKMAGIC 0xb0b5f11eL /* Salt length for PVK files */ # define PVK_SALTLEN 0x10 +/* Maximum length in PVK header */ +# define PVK_MAX_KEYLEN 102400 +/* Maximum salt length */ +# define PVK_MAX_SALTLEN 10240 static EVP_PKEY *b2i_rsa(const unsigned char **in, unsigned int length, unsigned int bitlen, int ispub); @@ -644,6 +648,9 @@ static int do_PVK_header(const unsigned char **in, unsigned int length, *psaltlen = read_ledword(&p); *pkeylen = read_ledword(&p); + if (*pkeylen > PVK_MAX_KEYLEN || *psaltlen > PVK_MAX_SALTLEN) + return 0; + if (is_encrypted && !*psaltlen) { PEMerr(PEM_F_DO_PVK_HEADER, PEM_R_INCONSISTENT_HEADER); return 0; |
