[Ach] Issue with OpenSSL >0.9.8l <1.0.0

Torsten Gigler torsten.gigler at owasp.org
Fri Apr 25 15:47:34 CEST 2014


Hi,

Have you tried to add ':DHE-RSA-AES256-SHA' in the Cipher String?
Here my suggestion:

openssl ciphers -V
EDH+aRSA+AESGCM:EDH+aRSA+AES256:DHE-RSA-AES256-SHA:EDH+aRSA+CAMELLIA256:DHE-RSA-AES128-SHA256:EDH+aRSA+CAMELLIA:EECDH+aRSA+AESGCM:EECDH+aRSA+AES:RSA+AESGCM:AES256-SHA:CAMELLIA256-SHA:RSA+AES+SHA:RSA+CAMELLIA+SHA
          0x00,0x9F - DHE-RSA-AES256-GCM-SHA384 TLSv1.2 Kx=DH       Au=RSA
Enc=AESGCM(256) Mac=AEAD
          0x00,0x9E - DHE-RSA-AES128-GCM-SHA256 TLSv1.2 Kx=DH       Au=RSA
Enc=AESGCM(128) Mac=AEAD
          0x00,0x6B - DHE-RSA-AES256-SHA256   TLSv1.2 Kx=DH       Au=RSA
Enc=AES(256)  Mac=SHA256
          0x00,0x39 - DHE-RSA-AES256-SHA      SSLv3 Kx=DH       Au=RSA
Enc=AES(256)  Mac=SHA1
          0x00,0x88 - DHE-RSA-CAMELLIA256-SHA SSLv3 Kx=DH       Au=RSA
Enc=Camellia(256) Mac=SHA1
          0x00,0x67 - DHE-RSA-AES128-SHA256   TLSv1.2 Kx=DH       Au=RSA
Enc=AES(128)  Mac=SHA256
          0x00,0x45 - DHE-RSA-CAMELLIA128-SHA SSLv3 Kx=DH       Au=RSA
Enc=Camellia(128) Mac=SHA1
          0xC0,0x30 - ECDHE-RSA-AES256-GCM-SHA384 TLSv1.2 Kx=ECDH
Au=RSA  Enc=AESGCM(256) Mac=AEAD
          0xC0,0x2F - ECDHE-RSA-AES128-GCM-SHA256 TLSv1.2 Kx=ECDH
Au=RSA  Enc=AESGCM(128) Mac=AEAD
          0xC0,0x28 - ECDHE-RSA-AES256-SHA384 TLSv1.2 Kx=ECDH     Au=RSA
Enc=AES(256)  Mac=SHA384
          0xC0,0x14 - ECDHE-RSA-AES256-SHA    SSLv3 Kx=ECDH     Au=RSA
Enc=AES(256)  Mac=SHA1
          0xC0,0x27 - ECDHE-RSA-AES128-SHA256 TLSv1.2 Kx=ECDH     Au=RSA
Enc=AES(128)  Mac=SHA256
          0xC0,0x13 - ECDHE-RSA-AES128-SHA    SSLv3 Kx=ECDH     Au=RSA
Enc=AES(128)  Mac=SHA1
          0x00,0x9D - AES256-GCM-SHA384       TLSv1.2 Kx=RSA      Au=RSA
Enc=AESGCM(256) Mac=AEAD
          0x00,0x9C - AES128-GCM-SHA256       TLSv1.2 Kx=RSA      Au=RSA
Enc=AESGCM(128) Mac=AEAD
          0x00,0x35 - AES256-SHA              SSLv3 Kx=RSA      Au=RSA
Enc=AES(256)  Mac=SHA1
          0x00,0x84 - CAMELLIA256-SHA         SSLv3 Kx=RSA      Au=RSA
Enc=Camellia(256) Mac=SHA1
          0x00,0x2F - AES128-SHA              SSLv3 Kx=RSA      Au=RSA
Enc=AES(128)  Mac=SHA1
          0x00,0x41 - CAMELLIA128-SHA         SSLv3 Kx=RSA      Au=RSA
Enc=Camellia(128) Mac=SHA1

Remarks:
- I changed the order of the ciphers (= Priority of the ciphers a server
chooses, if 'Server Order' is set),
- excluded '0x00,0x33 - DHE-RSA-AES128-SHA' to protect aginst a possible
incompatibility for JAVA6+7 & DH-Keys >1024bits
- added '0x00,0x9D - AES256-GCM-SHA384' and '0x00,0x9C - AES128-GCM-SHA256'
(is there any reason why they weren't included before?)

Do you get the following Ciphers with OpenSSL 0.9.8?
openssl ciphers -v
EDH+aRSA+AESGCM:EDH+aRSA+AES256:DHE-RSA-AES256-SHA:EDH+aRSA+CAMELLIA256:DHE-RSA-AES128-SHA256:EDH+aRSA+CAMELLIA:EECDH+aRSA+AESGCM:EECDH+aRSA+AES:RSA+AESGCM:AES256-SHA:CAMELLIA256-SHA:RSA+AES+SHA:RSA+CAMELLIA+SHA
DHE-RSA-AES256-SHA      SSLv3 Kx=DH       Au=RSA  Enc=AES(256)  Mac=SHA1
AES256-SHA              SSLv3 Kx=RSA      Au=RSA  Enc=AES(256)  Mac=SHA1
AES128-SHA              SSLv3 Kx=RSA      Au=RSA  Enc=AES(128)  Mac=SHA1

Kind regards
Torsten

2014-04-25 11:15 GMT+02:00 Pepi Zawodsky <pepi.zawodsky at maclemon.at>:

>
> On 25.04.2014, at 04:53, Aaron Zauner <azet at azet.org> wrote:
> > as well as older versions of Mac OS X.
>
> ALL versions of OS X up to and including the current Mavericks are
> affected by this.
> $ /usr/bin/openssl version
> OpenSSL 0.9.8y 5 Feb 2013
>
> Expanding Ciphersuite B results in:
>
> $ /usr/bin/openssl ciphers
> 'EDH+CAMELLIA:EDH+aRSA:EECDH+aRSA+AESGCM:EECDH+aRSA+SHA384:EECDH+aRSA+SHA256:EECDH:+CAMELLIA256:+AES256:+CAMELLIA128:+AES128:+SSLv3:!aNULL:!eNULL:!LOW:!3DES:!MD5:!EXP:!PSK:!DSS:!RC4:!SEED:!ECDSA:CAMELLIA256-SHA:AES256-SHA:CAMELLIA128-SHA:AES128-SHA'
>
> AES256-SHA:AES128-SHA
>
> Unexpectedly, DHE ciphers are missing.
>
>
> $ /opt/local/bin/openssl version
> OpenSSL 1.0.1g 7 Apr 2014
>
> $ /opt/local/bin/openssl ciphers
> 'EDH+CAMELLIA:EDH+aRSA:EECDH+aRSA+AESGCM:EECDH+aRSA+SHA384:EECDH+aRSA+SHA256:EECDH:+CAMELLIA256:+AES256:+CAMELLIA128:+AES128:+SSLv3:!aNULL:!eNULL:!LOW:!3DES:!MD5:!EXP:!PSK:!DSS:!RC4:!SEED:!ECDSA:CAMELLIA256-SHA:AES256-SHA:CAMELLIA128-SHA:AES128-SHA'
>
>
> DHE-RSA-AES256-GCM-SHA384:DHE-RSA-AES256-SHA256:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-SHA384:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES128-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-SHA256:DHE-RSA-CAMELLIA256-SHA:DHE-RSA-AES256-SHA:ECDHE-RSA-AES256-SHA:DHE-RSA-CAMELLIA128-SHA:DHE-RSA-AES128-SHA:ECDHE-RSA-AES128-SHA:CAMELLIA256-SHA:AES256-SHA:CAMELLIA128-SHA:AES128-SHA
>
> Best regards
> Pepi
>
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