Stories
Slash Boxes
Comments

SoylentNews is people

posted by martyb on Friday December 11 2015, @04:55PM   Printer-friendly
from the failure-to-communicate dept.

http://arstechnica.com/security/2015/12/sha1-sunset-will-block-millions-from-encrypted-net-facebook-warns/

SHA1 certificates for secure SSL/TLS communications are deprecated due to known computational vulnerabilities. To ensure secure communications, a forced deprecation sounds reasonable (i.e. refuse to connect to these). That has the side effect that it will lock out many users who are unable to use stronger hashes such as SHA256. However, if a fallback to SHA1 is provided (as Facebook is proposing), everyone will be vulnerable to SHA1 downgrade man-in-the-middle attacks.

What to do?


Original Submission

 
This discussion has been archived. No new comments can be posted.
Display Options Threshold/Breakthrough Mark All as Read Mark All as Unread
The Fine Print: The following comments are owned by whoever posted them. We are not responsible for them in any way.
  • (Score: 2) by RamiK on Friday December 11 2015, @07:38PM

    by RamiK (1813) on Friday December 11 2015, @07:38PM (#275108)

    IPsec has SHA1 as well.

    --
    compiling...
    Starting Score:    1  point
    Karma-Bonus Modifier   +1  

    Total Score:   2  
  • (Score: 1, Interesting) by Anonymous Coward on Friday December 11 2015, @08:11PM

    by Anonymous Coward on Friday December 11 2015, @08:11PM (#275127)

    dammit. Sound like MD5 all over again.

    To this day, POP, SMTP, SIP (possibly a stretch to include this one), PPPoE all use MD5 hashing as their strongest form of authentication.

    • (Score: 0) by Anonymous Coward on Saturday December 12 2015, @02:51AM

      by Anonymous Coward on Saturday December 12 2015, @02:51AM (#275281)

      That is just not true for at least some of the protocols you cited. For example, SMTP can use any registered SASL. There are many different versions, including SCRAM-SHA-256, that do not have MD5 be their strongest form.