diff options
Diffstat (limited to 'openssl/crypto/ocsp/ocsp_ht.c')
| -rw-r--r-- | openssl/crypto/ocsp/ocsp_ht.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/openssl/crypto/ocsp/ocsp_ht.c b/openssl/crypto/ocsp/ocsp_ht.c index 12bbfcffd..af5fc1669 100644 --- a/openssl/crypto/ocsp/ocsp_ht.c +++ b/openssl/crypto/ocsp/ocsp_ht.c @@ -397,11 +397,12 @@ int OCSP_sendreq_nbio(OCSP_RESPONSE **presp, OCSP_REQ_CTX *rctx) case OHS_ASN1_HEADER: - /* Now reading ASN1 header: can read at least 6 bytes which - * is more than enough for any valid ASN1 SEQUENCE header + /* Now reading ASN1 header: can read at least 2 bytes which + * is enough for ASN1 SEQUENCE header and either length field + * or at least the length of the length field. */ n = BIO_get_mem_data(rctx->mem, &p); - if (n < 6) + if (n < 2) goto next_io; /* Check it is an ASN1 SEQUENCE */ @@ -414,6 +415,11 @@ int OCSP_sendreq_nbio(OCSP_RESPONSE **presp, OCSP_REQ_CTX *rctx) /* Check out length field */ if (*p & 0x80) { + /* If MSB set on initial length octet we can now + * always read 6 octets: make sure we have them. + */ + if (n < 6) + goto next_io; n = *p & 0x7F; /* Not NDEF or excessive length */ if (!n || (n > 4)) |