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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?


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  • (Score: 3, Insightful) by VanderDecken on Friday December 11 2015, @11:15PM

    by VanderDecken (5216) on Friday December 11 2015, @11:15PM (#275212)

    It makes you wonder how many are embedded devices that (for good or bad) are talking to external systems. If so, that's a serious update nightmare that is already causing problems with other vulnerabilities.

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