RE: CERT Advisory: #144389 Return of Bleichenbacher's Oracle Threat (ROBOT)

I got word from IBM a few weeks ago on this. They fixed this potential TLS issue on IBM i many, many years ago. Things that use IBM i encryption like Apache, Java, OpenSSL are not affected. Domino is a "maybe" that I'm aware of...I'll let you know.

Steve Pitcher
iTech Solutions
Office: (203) 744-7854 Ext. 176
Mobile: (902) 301-0810
http://www.itechsol.com
http://www.iInTheCloud.com

-----Original Message-----
From: MIDRANGE-L [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of JWGrant@xxxxxxxxxxxxxxx
Sent: Tuesday, January 2, 2018 3:02 PM
To: Midrange Systems Technical Discussion <midrange-l@xxxxxxxxxxxx>
Subject: Re: CERT Advisory: #144389 Return of Bleichenbacher's Oracle Threat (ROBOT)

I don't believe it has anything to do with our server certificate.

The ssllabs server is checking client connections to our servers and in the server cipher list in which we have the RSA ciphers for PKI are enabled. The only way to get around this is to disable the RSA ciphers.

Jim

Jim W Grant
Senior VP, Chief Information Officer
Web: www.pdpgroupinc.com




From: "Bradley Stone" <bvstone@xxxxxxxxx>
To: "Midrange Systems Technical Discussion" <midrange-l@xxxxxxxxxxxx>
Date: 01/02/2018 01:40 PM
Subject: Re: CERT Advisory: #144389 Return of Bleichenbacher's
Oracle Threat (ROBOT)
Sent by: "MIDRANGE-L" <midrange-l-bounces@xxxxxxxxxxxx>



I'm guessing the "update" for the software listed is a new cert without
RSA. Nothing in the software list seems to applies to the apache server
on the IBM i.

In this case it would mean just requesting and installing new certs that are not RSA... unless I'm reading this wrong.

Bradley V. Stone
www.bvstools.com
MAILTOOL Benefit #16 <https://www.bvstools.com/mailtool.html>: No external "helper" PC system required. 100% IBM i native!

On Tue, Jan 2, 2018 at 12:14 PM, Rob Berendt <rob@xxxxxxxxx> wrote:

Perhaps this applies?

...
Apply an update

Some products may have software updates available to address this issue.
If an update is available, affected users are encouraged to update

product

software or firmware. Please see the Affected Vendors list below for

more

information.
...

Can you display the actual CVE number?


Rob Berendt
--
IBM Certified System Administrator - IBM i 6.1 Group Dekko Dept 1600
Mail to: 2505 Dekko Drive
Garrett, IN 46738
Ship to: Dock 108
6928N 400E
Kendallville, IN 46755
http://www.dekko.com





From: Bradley Stone <bvstone@xxxxxxxxx>
To: Midrange Systems Technical Discussion <midrange-l@xxxxxxxxxxxx>
Date: 01/02/2018 12:56 PM
Subject: Re: CERT Advisory: #144389 Return of Bleichenbacher's
Oracle Threat (ROBOT)
Sent by: "MIDRANGE-L" <midrange-l-bounces@xxxxxxxxxxxx>



On Tue, Jan 2, 2018 at 11:13 AM, <JWGrant@xxxxxxxxxxxxxxx> wrote:

I also noticed that when running an SSL test with SSLLabs (
https://www.ssllabs.com/ssltest/)
our web servers, effective 2-1-18, SSL Labs will downgrade the

TLS/SSL

ratings to an "F".

Anyone else seeing similar issues?

I just ran the test on my sites and got the same thing. Running on

V7R3.

My certs are quite new.

Any action you're going to be taking, Jim? Or others?

Jim

Cert Info:

CERT Coordination Center (CERT/CC) has released information on a

Transport

Layer Security (TLS) vulnerability. Exploitation of this
vulnerability could allow an attacker to access sensitive information.
The TLS vulnerability is also known as Return of Bleichenbacher's

Oracle

Threat (ROBOT). ROBOT allows an attacker to obtain the RSA key

necessary

to decrypt TLS traffic under certain conditions. Mitigations include
installing updates to affected products as they become available.

US-CERT

encourages users and administrators to review CERT/CC Vulnerability

Note

VU #144389.
http://www.kb.cert.org/vuls/id/144389

More information here:
https://robotattack.org/

Jim W Grant
Senior VP, Chief Information Officer
Web: www.pdpgroupinc.com

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