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Merge pull request #2425 from JacobBarthelmeh/SanityChecks

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sanity check on buffer size
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David Garske 2019-08-22 12:30:06 -07:00 committed by GitHub
commit 0e6bb4717e
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1 changed files with 10 additions and 0 deletions
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10
wolfcrypt/src/asn.c
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@ -7580,6 +7580,11 @@ static int DecodeCertExtensions(DecodedCert* cert)
/* check for critical flag */
critical = 0;
if ((idx + 1) > (word32)sz) {
WOLFSSL_MSG("\tfail: malformed buffer");
return BUFFER_E;
}
if (input[idx] == ASN_BOOLEAN) {
ret = GetBoolean(input, &idx, sz);
if (ret < 0) {
@ -14443,6 +14448,11 @@ static int DecodeOcspRespExtensions(byte* source,
}
/* check for critical flag */
if ((idx + 1) > (word32)sz) {
WOLFSSL_MSG("\tfail: malformed buffer");
return BUFFER_E;
}
if (source[idx] == ASN_BOOLEAN) {
WOLFSSL_MSG("\tfound optional critical flag, moving past");
ret = GetBoolean(source, &idx, sz);