checkServerIdentity
Verifies the certificate cert
is issued to hostname
.
Returns Error object, populating it with reason
, host
, and cert
on failure. On success, returns undefined.
This function is intended to be used in combination with thecheckServerIdentity
option that can be passed to {@link connect} and as such operates on a certificate object
. For other purposes, consider using x509.checkHost()
instead.
This function can be overwritten by providing an alternative function as the options.checkServerIdentity
option that is passed to tls.connect()
. The overwriting function can call tls.checkServerIdentity()
of course, to augment the checks done with additional verification.
This function is only called if the certificate passed all other checks, such as being issued by trusted CA (options.ca
).
Earlier versions of Node.js incorrectly accepted certificates for a givenhostname
if a matching uniformResourceIdentifier
subject alternative name was present (see CVE-2021-44531). Applications that wish to acceptuniformResourceIdentifier
subject alternative names can use a custom options.checkServerIdentity
function that implements the desired behavior.
Since
v0.8.4
Parameters
The host name or IP address to verify the certificate against.
A certificate object
representing the peer's certificate.