Vulnerability Details CVE-2017-17688
The OpenPGP specification allows a Cipher Feedback Mode (CFB) malleability-gadget attack that can indirectly lead to plaintext exfiltration, aka EFAIL. NOTE: third parties report that this is a problem in applications that mishandle the Modification Detection Code (MDC) feature or accept an obsolete packet type, not a problem in the OpenPGP specification
Exploit prediction scoring system (EPSS) score
EPSS Score 0.012
EPSS Ranking 78.0%
CVSS Severity
CVSS v3 Score 5.9
CVSS v2 Score 4.3
References
- http://flaked.sockpuppet.org/2018/05/16/a-unified-timeline.html
- http://www.securityfocus.com/bid/104162
- http://www.securitytracker.com/id/1040904
- https://efail.de
- https://lists.gnupg.org/pipermail/gnupg-users/2018-May/060334.html
- https://news.ycombinator.com/item?id=17066419
- https://protonmail.com/blog/pgp-vulnerability-efail
- https://twitter.com/matthew_d_green/status/995996706457243648
- https://www.patreon.com/posts/cybersecurity-15-18814817
- https://www.synology.com/support/security/Synology_SA_18_22
- http://flaked.sockpuppet.org/2018/05/16/a-unified-timeline.html
- http://www.securityfocus.com/bid/104162
- http://www.securitytracker.com/id/1040904
- https://efail.de
- https://lists.gnupg.org/pipermail/gnupg-users/2018-May/060334.html
- https://news.ycombinator.com/item?id=17066419
- https://protonmail.com/blog/pgp-vulnerability-efail
- https://twitter.com/matthew_d_green/status/995996706457243648
- https://www.patreon.com/posts/cybersecurity-15-18814817
- https://www.synology.com/support/security/Synology_SA_18_22
Products affected by CVE-2017-17688
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cpe:2.3:a:apple:mail:-
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cpe:2.3:a:bloop:airmail:-
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cpe:2.3:a:emclient:emclient:-
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cpe:2.3:a:flipdogsolutions:maildroid:-
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cpe:2.3:a:freron:mailmate:-
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cpe:2.3:a:horde:horde_imp:-
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cpe:2.3:a:microsoft:outlook:2007
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cpe:2.3:a:mozilla:thunderbird:-
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cpe:2.3:a:postbox-inc:postbox:-
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cpe:2.3:a:r2mail2:r2mail2:-
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cpe:2.3:a:roundcube:webmail:-