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-1
votes
1answer
78 views

How can you check and analyze SSL ports other than 443? [closed]

I tried https://www.ssllabs.com/ssltest/analyze.html?d=imap.spamarrest.com%3A993&hideResults=on but it said Ports other than 443 not supported I need to check imap.spamarrest.com:993
2
votes
0answers
45 views

Should I force Thunderbird to avoid RFC5746 and CVE-2009-3555 security bugs?

I see that the latest version of Thunderbird (38.0.1) still has the defaults set to ignore the error. Is this a big problem? Should I change the defaults to enforce greater security? Here is ...
16
votes
6answers
14k views

Is MD5 considered insecure?

After all these articles circulating online about md5 exploits, I am considering switching to another hash algorithm. As far as I know it's always been the algorithm of choice among numerous DBAs. Is ...
0
votes
1answer
20 views

Questions about “Triple Handshakes Considered Harmful Breaking and Fixing Authentication over TLS”

Recently I'm reading the paper "Triple Handshakes Considered Harmful Breaking and Fixing Authentication over TLS", and I have several questions unclear. First question: In TLS 1.2 standard, we can ...
0
votes
1answer
69 views

Triple handshake attack against TLS

Triple handshake attack was discovered lately, and to quote the article "The secure renegotiation indication extension only binds handshakes on the same connection, but does not apply if the session ...
1
vote
2answers
152 views

Would disabling resumption/renegotiation mitigate the triple handshake issue?

The Triple Handshake Issue was disclosed lately. As far as I understand it, it highly depends on renegotiation and resumption. So the simple question is: Would disabling resumption and/or ...
1
vote
1answer
44 views

TLS: could the resumed session and the original session in the same connection?

In tls 1.2, we know that every connection is associated with one session, and session resumption can be used to establish a new connection quickly by using the session ID of the original session of an ...
1
vote
0answers
504 views

Java Updates Restrict Unsafe SSL Renegotiation With Active Directory Servers

We have two active directory (AD) hosts, ead01.domain.com and ead02.domain.com; we also have a corresponding service domain, at eadauth.domain.com which round-robins between these AD hosts (via DNS). ...
1
vote
0answers
24 views

What level of protection does the secure remote password protocol provide against the Pass the Hash attack?

What level of protection does the secure remote password protocol provide against the Pass the Hash attack? I have read a lot about the secure remote password, and in the Stanford "What is it?" page ...
2
votes
3answers
460 views

Is it possible to upgrade the SSL version of a connection from the server's side only?

I am trying to find out if there's a way to upgrade the SSL version from SSLv3 to TLSv1 of a connection by only making server-side changes. In my case, both the client application and server are ...
3
votes
2answers
386 views

Why do browsers probe and fallback (or, why SSL_MODE_SEND_FALLBACK_SCSV)?

I've been following POODLE and the SSL_MODE_SEND_FALLBACK_SCSV TLS extension. I never really paid much attention to it, but it appears SSL_MODE_SEND_FALLBACK_SCSV is needed for clients like browsers ...
5
votes
3answers
1k views

TLS Renegotiation Indication Extension vulnerability

I am trying to understand the TLS Renegotiation Indication Extension from the RFC. I can understand that it is related to the fact that the renegotiation is sent under the encrypted stream, but I ...
8
votes
2answers
3k views

Not clear on ssl renegotiation vulnerabilty

When we read about TLS Renegotiation vulnerability, does it mean that a server is not supposed to ever accept renegotiation during a secure connection? I thought that by renegotiation security is ...
6
votes
1answer
808 views

How has TLS renegotiation been fixed?

I've read RFC 5746 on the TLS secure renegotiation extension. However, I don't understand how it fixes the problem. Client and server are required to include the verify_data from the previous ...