CVE-2017-17688

Description

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

References

https://www.synology.com/support/security/Synology_SA_18_22

https://www.patreon.com/posts/cybersecurity-15-18814817

https://twitter.com/matthew_d_green/status/995996706457243648

https://protonmail.com/blog/pgp-vulnerability-efail

https://news.ycombinator.com/item?id=17066419

https://lists.gnupg.org/pipermail/gnupg-users/2018-May/060334.html

http://www.securitytracker.com/id/1040904

http://www.securityfocus.com/bid/104162

http://flaked.sockpuppet.org/2018/05/16/a-unified-timeline.html

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3