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Allow subidentifiers of size UINT_MAX

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Make overflow check more accurate and add testcases

Signed-off-by: David Horstmann <david.horstmann@arm.com>
This commit is contained in:
David Horstmann
2023-06-02 14:50:35 +01:00
parent bf95e9a058
commit 02127ab022
2 changed files with 7 additions and 1 deletions
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library/oid.c
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@ -1012,7 +1012,7 @@ int mbedtls_oid_from_numeric_string(mbedtls_asn1_buf *oid,
}
}
if ((UINT_MAX - component2) <= (component1 * 40)) {
if (component2 > (UINT_MAX - (component1 * 40))) {
ret = MBEDTLS_ERR_ASN1_INVALID_DATA;
goto error;
}