XMPP can be used with SNI in two contexts:
- Standard RFC 6120 STARTTLS-based connections; in that case, SNI
is most likely to be ignored, as XMPP uses another way to signal
the target domain name (via the @to attribute on the stream
header, which is already set correctly by testssl.sh). However,
setting SNI to a different value than the @to attribute may
lead to confusion.
- XEP-0368 (XMPP-over-TLS) connections which omit the STARTTLS
phase and go right for TLS (and inside that, XMPP). In that case,
SNI is obviously required to be correct. XEP-0368 specifies that
the SNI name MUST be the domain name of the service (not
necessarily the host name of the endpoint, thanks to SRV
records).
Hence, this patch forces the SNI name to be the --xmpphost value,
if --xmpphost is given. Note that it blatantly ignores whether
XMPP is used otherwise.
Travis failure was due to debug output in function which return a string.
The debug statement was removed, (stderr would have been choice \#2).
Issuer is heading now the intermediate certificate section, not
sure whethe this is redundant info.
* reorder sequence of checks in certificate info so that the chain relevant points are closer
together
* determine_cert_fingerprint_serial() doesn't need fil input anymore, thus removed that part
* cert_validityPeriod in JSON/CSV may lead to misunderstandings, thus renamed to cert_extlifeSpan
* reorganized loop for the intermediate certificate checks, so that also i is used and not the variable
which defines the number of certificates, i.e. certificates_provided. In addition made the counting
more hiuma friendly, which starts now at 1 instead of 0
* add cn and issuer_CN to the output both on screen and file
* the severity rating for intermediates are just a shot (20/40 days) and
deserve a second thought
* replace the expiry check by one test statement and make grep futile
* replace at some places "$openssl x509 -in $filename" by "$openssl x509 <<< $var"
* the thing with 25*60*60 was fie readability. When it's used >20 times it maybe is not
(and maybe costs to much time) --> replaced by $secsaday
* adjusted the loop for bad ocsp check for readability
* UI feed back for expiration date of intermediates: 20 days: HIGH, 40 days: MEDIUM
* also in JSON/CSV
* list the end date of validity
* works for >1 intermediates too
* section moved to the end of certificate_info()
* renamed <cert#${certificate_number}> --> <hostCert#${certificate_number}> to avoid coinfusion with intermediate certs
* removed blanks in return values of determine_dates_certificate
determine_dates_certificate() is now determining the important dates
of a certificate passed via argument. It works of course for host and
any other certificates.
Returning multiple parameters is being done via CSV and passed to a
read statement which seemed the best choice for bash.
ToDo:
* $expok is not set properly for intermediate certificates
* check if expired at least in the UI (JSON+CSV: echo the dates so far)
* for multiple host certificates the naming scheme (jsonID + intermediate
certnumnber kind of sucks:
"id" : "intermediate_cert_fingerprintSHA256 <cert#1> 1",
"id" : "intermediate_cert_notAfter <cert#2> 1",
The whole thing is kind of hackish as the code has been historically grown.
At some certian point we may want to reconsider how we determine properties of
certificates in certificate_info()
See #1683, #1653, #1004, #1264
* separate code for bad ocsp a bit
* output intermediate cert in json/csv
* replace sed statements from cert_fingerprint* and -serial by bash funcs
This commit adds
* a check for the elliptical curves
* and a check for TLS extensions
which will again reduces false positives.
Background:
* https://en.wikipedia.org/wiki/Comparison_of_TLS_implementations#Supported_elliptic_curves
* https://en.wikipedia.org/wiki/Comparison_of_TLS_implementations#Extensions
Also:
* Docu phrased more precise (we're not checking ciphers and
HTTP Server banner only
* As a last resort we also take 'Microsoft-HTTPAPI/2.0' as a server header on the HTTPS branch
and query the HTTP branch for Microsoft-IIS/8.x.
* $EXPERIMENTAL overrides some banner and service related checks. So that e.g. SMTP servers can also
be checked. Last but bot least ist's a vulnerability of the TLS stack.
For better debugging we'll keep the TLS extensions and offered curves in a file.
Also it adds a debug1() function which may be needed on other occasions.
Also the output is better coded as we put "check patches locally to confirm"
into a variable.
There's still room for improvement:
* More extensions (see https://raw.githubusercontent.com/cisco/joy/master/doc/using-joy-fingerprinting-00.pdf)
* We could need a separate determine_curves() function, see #1730 as otherwise
we can't use the curves in a non-default run.
Server side closed the connection but openssl retrieved
a zero exit code. In addition now we look for "closed"
and if that was returned from the server we label it
as not vulnerable.
This fixes#1725
This commit implements a detection of Winshock from 2014 (aka MS14-066, CVE-2014-6321).
It does that by analyzing
* the ciphers supported -- MS' rollup patch introduced new GCM ciphers
* AND grabbing the server banner which should match IIS 8.0 oder IIS 8.5
Admittedly this is not a strong detection. But it worked in the cases I tested
(no RDP yet). The other known method remotely testing for it against IIS is
using a patched openssl binary (see https://github.com/drwetter/testssl.sh/issues/331#issuecomment-211534954)
-- the diff "jules" (hi) provided a while back. That seems to stem from securitysift
albeit his decription was not complete and he didn't provide a PoC (I've
seen also polarssl + a little bit of python here: https://vimeo.com/112089813
The catch is securitysift's method, is not as trivial to implement and it dosses the
sass.exe process, see: http://www.securitysift.com/exploiting-ms14-066-cve-2014-6321-aka-winshock/.
* Todo: man page
This commit also removes -BB from the help. We haven't settled yet finally
where we go with short options for the cmd line for vulnerabilities. One
is for sure though: Using one letter uppercase doesn't scale. As winshock
can be executed with --WS and --winshock --BB brings that in line. For now
also -BB works (as -WS) but it isn't advertised anymore.
SERVICE global was previously set to $protocol which was
meant to set this for STARTTLS services. However it
was executes outside the corresponding if-statement.
This commit moves the statement where it belongs.
For not vulnerable hosts the low level starttls_* functions
returned an error when the STARTTLS injection was tested which
confused Travis/CI ( "Oops: STARTTLS handshake failed (code: 2)" )
* Ensured the random char generation worked under every OS supported
* Got POP3 and IMAP working
* always define SERVICE so that we can us it also for SMTP starttls injection
* fixed error in starttls_smtp_dialog where arg1 was taken as payload instead of arg2
* squashed error msg when killed socat or openssl process to avoid mess on screen
when processes already terminated
(* removed some redundant quotes at RHS if [[]] expressions)
todo:
* more tests for positives
* are tests for negatives sufficent? ("prove" is happy except one issue which
is probably not related but still need to understand)
For the record: t/25_baseline_starttls.t line 50 and 67:
"Oops: STARTTLS handshake failed (code: 2)"
