PayPal Error (35) error:1408F10B SSL3_GET_RECORD:wrong version number

[DrByte]

How does this apply to authorizenet_aim.php? Didn't notice a separate thread for it and do see

curl_setopt($ch, CURLOPT_SSLVERSION, 3);

at my 576...

What's the move??

Thanks a bunch,
John

IMO I'd leave it alone for now (I'm not seeing any errors with Authnet as-is right now), as even PayPal has apparently relaxed their initial hyper-protective rejection of all SSL3 connections. But if the same error pops up suddenly, simply comment out the line.

[mprough]

PP tech support told me it's only a 24 hr reprieve

[DrByte]

PP tech support told me it's only a 24 hr reprieve

That wouldn't surprise me.

[bumba000]

thank you

[wilt]

I've done some quick and dirty testing using wireshark to analyze the ssl handshake.

the results seem to suggest that these 3 scenarios are all similar
eg
Using
curl_setopt($ch, CURLOPT_SSLVERSION, 1);
curl_setopt($ch, CURLOPT_SSLVERSION, 4);
or in fact removing the curl_setopt($ch, CURLOPT_SSLVERSION, n); line completely
will force version negotiation and curl will then use TLS

It should be noted that php documentation is pretty poor on this. Suggesting that only 2 and 3 are valid options for CURLOPT_SSLVERSION but that given no version php will negotiate for the most recent version e.g. tls v1.2

As has been noted, paypal seems to have re added ssl v3 to their main live endpoint, while their sandbox is blocking ssl v3.
This maybe because they gave no notice, and have had mega complaints. It's still likely they will turn off ssl v3 on the live endpoints soon.

At this point, the advice DrByte posted in the release announcements should still be followed:
http://www.zen-cart.com/showthread.p...yment-security

We will of course update that based on any further information.

[DrByte]

To add a point of clarity, for those technically-minded, here are currently-valid SSL/TLS versions, listed from most-secure to least-secure:

Best to worst:
TLS 1.2 (best choice today)
TLS 1.1
TLS 1.0
SSL 3.0 (has the POODLE vulnerability)
SSL 2.0 (generally not recommended, and typically not even available in modern webservers)
SSL 1 (obsolete, no longer offered)

So, what wilt and I have been investigating is the net impact against performance based on the code changes I've been posting about.

And, so reading between the lines from wilt's post above, what we're seeing is that if one sets CURLOPT_SSLVERSION to 2 or 3, it will try SSL 2.0 or SSL 3.0, respectively, but if one comments-out the CURLOPT_SSLVERSION then the best TLS (or SSL if no TLS versions can be negotiated) will be selected.

(Admittedly we've also confirmed that setting CURLOPT_SSLVERSION to 1 does cause it to jump to autonegotiating a TLS version, but we'd like to do more research before recommending a specific value, since specifying a value like 5 or higher actually causes errors.)

Hope that helps answer questions for those who are curious.

[RodG]

Hope that helps answer questions for those who are curious.

Perfect. Thanks guys. I was planning on using wireshark over the weekend to see exactly what was going on with the various options/settings myself. You've saved me a lot of time :)

ZenCart really is the best. Not one of the other ecommerce forums I frequent come close to the speed and detail provided regarding this issue. (I suspect that's why PayPal have given a temporary reprieve - All of the other eCommerce systems are still looking for a solution, and I'll wager that none of them will provide the 'techie' info that you have.

Supurb!!

Cheers
RodG

[DivaVocals]

Perfect. Thanks guys. I was planning on using wireshark over the weekend to see exactly what was going on with the various options/settings myself. You've saved me a lot of time :)

ZenCart really is the best. Not one of the other ecommerce forums I frequent come close to the speed and detail provided regarding this issue. (I suspect that's why PayPal have given a temporary reprieve - All of the other eCommerce systems are still looking for a solution, and I'll wager that none of them will provide the 'techie' info that you have.

Supurb!!

Cheers
RodG

Yupp.. True dat!!!
**nods in agreement**

Man it's getting scary how sympatico you and I have been as of late..

[RixStix]

TNX guys.

Authorize.net implemented the SSLv3 checks yesterday and the fix worked like a charm.

[DrByte]

Further, PayPal has posted today that they will (shortly) fully remove SSLv3 support from their servers ... so commenting-out the CURLOPT_SSLVERSION will be necessary ASAP.

Ref: https://www.paypal-community.com/t5/...LE/ba-p/891829