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  1.  Home
  2. MIDRANGE-L
  3. January 2018

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

I think some of us are interested in a PTF since we use *OPSYS for
QSSLCSLCTL system value:

*OPSYS The QSSLCSL (SSL cipher specification list)
system value is read only. The values
contained in the QSSLCSL (SSL cipher
specification list) system value are
automatically modified to contain the list of
supported cipher suites as determined by the
operating system release.

Bradley V. Stone
www.bvstools.com
GreenTools for Microsoft Apps <https://www.bvstools.com/g4ms.html>: Easy to
use interfaces for sending and receiving Email as well as OneDrive!

On Wed, Jan 3, 2018 at 6:23 AM, Rob Berendt <rob@xxxxxxxxx> wrote:

The question becomes: Is it a PTF issue or is it resolved by eliminating
the use of certain ciphers?
As shown by Domino it was resolved by no longer using certain ciphers.
Or, are you hoping that IBM patches certain existing ciphers?


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: "Steinmetz, Paul" <PSteinmetz@xxxxxxxxxx>
To: "'Midrange Systems Technical Discussion'"
<midrange-l@xxxxxxxxxxxx>
Date: 01/02/2018 08:35 PM
Subject: RE: CERT Advisory: #144389 Return of Bleichenbacher's
Oracle Threat (ROBOT)
Sent by: "MIDRANGE-L" <midrange-l-bounces@xxxxxxxxxxxx>



SI66509 is orderable and downloads if ordered individually, but not it
ordered via SF99711.
I compared the CVEs mentioned in the PTF, they do not coincide to the CVE
mentioned in Advisory 144389.
I'm concluding at this time that PTFs have NOT yet been released for
144389.

Does everyone agree?

Paul

-----Original Message-----
From: MIDRANGE-L [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of
Jack Woehr
Sent: Tuesday, January 02, 2018 6:32 PM
To: Midrange Systems Technical Discussion
Subject: Re: CERT Advisory: #144389 Return of Bleichenbacher's Oracle
Threat (ROBOT)

SI66509

On Tue, Jan 2, 2018 at 4:24 PM, Jack Woehr
<jwoehr@xxxxxxxxxxxxxxxxxxxxxxxx>
wrote:

This page was updated today:

https://www.ibm.com/developerworks/community/wikis/home?lang=en#!/wiki
/ W1c12c273752d_4cb8_b000_8375ec43426d/page/5733-SC1%
20PTFs/comment/837d5a85-7bc7-426c-a8da-d516a7f07e82

On Tue, Jan 2, 2018 at 3:37 PM, Bradley Stone <bvstone@xxxxxxxxx> wrote:

I just installed the latest CUM a couple days ago for V7R3 and still
see the Cipher list including the RSA ciphers.

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 4:34 PM, Steinmetz, Paul
<PSteinmetz@xxxxxxxxxx>
wrote:

Has IBM released any V7R1, V7R2, V7R3 PTFs to correct this issue,
I'm
not
finding any?



https://www.csa.gov.sg/singcert/news/advisories-
alerts/alert-on-the-return-of-bleichenbacher-oracle-threat-robot-at
tack



Impact

An attacker may be able to derive the TLS session key and fully
decrypt the TLS traffic to access any sensitive information that is
transmitted, such as login credentials and credit card numbers.



Recommendations

System administrators will need to patch their systems if their TLS
are implemented using RSA ciphers by the affected
vendors/implementations.
Visit https://robotattack.org for more information on the
respective vendor's patches.

If patches are not available, consider disabling TLS RSA cipher
suites,
if
possible, with the help of the product's documentation or seek
assistance
from the vendor.



Disabling RSA ciphers on a V7R1 system will basically break SSL,
since
V7R1 only supports RSA ciphers.

Would need to upgrade to V7R2 or V7R3 for the newer ciphers.



For those running SSL on V7R1, is this the end?



Paul







-----Original Message-----
From: MIDRANGE-L [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf
Of JWGrant@xxxxxxxxxxxxxxx
Sent: Tuesday, January 02, 2018 4:49 PM
To: Midrange Systems Technical Discussion
Subject: Re: CERT Advisory: #144389 Return of Bleichenbacher's
Oracle Threat (ROBOT)



Hi Rob:



We updated the cipher specs (via the notes.ini) and now pass the
test
for
Bleichenbacher's Oracle Threat (ROBOT) for both traveler and domino



SSLCipherSpec=C030009FC02F009EC028006BC0270067





This fixes domino but now we have to handle the IBMi apache servers
as well.



Jim



Jim W Grant

Senior VP, Chief Information Officer

Web: www.pdpgroupinc.com<http://www.pdpgroupinc.com>









From: "Rob Berendt" <rob@xxxxxxxxx<mailto:rob@xxxxxxxxx>>

To: "Midrange Systems Technical Discussion" <
midrange-l@xxxxxxxxxxxx<
mailto:midrange-l@xxxxxxxxxxxx>>

Date: 01/02/2018 03:06 PM

Subject: Re: CERT Advisory: #144389 Return of

Bleichenbacher's Oracle Threat (ROBOT)

Sent by: "MIDRANGE-L" <midrange-l-bounces@xxxxxxxxxxxx<mailto:
midrange-l-bounces@xxxxxxxxxxxx>>







Previous audits have blacklisted some

SSLCipherSpec=C030009FC02F009EC028006BC0270067

# Security audit black list:

# RSA_WITH_AES_256_GCM_SHA384 (009D)

# RSA_WITH_AES_128_GCM_SHA256 (009C)

# RSA_WITH_AES_256_CBC_SHA256 (003D)

# RSA_WITH_AES_256_CBC_SHA (0035)

# RSA_WITH_AES_128_CBC_SHA256 (003C)

# RSA_WITH_AES_128_CBC_SHA (002F)

# RSA_WITH_3DES_EDE_CBC_SHA (000A)

# RSA_WITH_RC4_128_SHA (0005)

# ECDHE_RSA_WITH_AES_256_CBC_SHA (C014) #
DHE_RSA_WITH_AES_256_CBC_SHA
(0039) # ECDHE_RSA_WITH_AES_128_CBC_SHA (C013)
https://www-10.lotus.com/ldd/dominowiki.nsf/dx/TLS_Cipher_Configura
tion





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



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