May 25, 2018 at 11:16AM
via Slashdot

It has been nearly two weeks since researchers unveiled "EFAIL," a set of critical software vulnerabilities that allow encrypted email messages to be stolen from within the inbox. The Intercept reports that developers of email clients and encryption plugins are still scrambling to come up with a permanent fix. From the report: Apple Mail is the email client that comes free with every Mac computer, and an open source project called GPGTools allows Apple Mail to smoothly encrypt and decrypt messages using the 23-year-old PGP standard. The day the EFAIL paper was published, GPGTools instructed users to workaround EFAIL by changing a setting in Apple Mail to disable loading remote content. Similarly, the creator of PGP, Phil Zimmermann, co-signed a blog post Thursday stating that EFAIL was "easy to mitigate" by disabling the loading of remote content in GPGTools. But even if you follow this advice and disable remote content, Apple Mail and GPGTools are still vulnerable to EFAIL. I developed a proof-of-concept exploit that works against Apple Mail and GPGTools even when remote content loading is disabled (German security researcher Hanno Bock also deserves much of the credit for this exploit, more on that below). I have reported the vulnerability to the GPGTools developers, and they are actively working on an update that they plan on releasing soon.

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