CVEvulnerability
CVE-2017-17688
5.9 MEDIUM
Official page ↗
- Status
- Modified
- Published
- 2018-05-16
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.0 ([email protected])
- 5.9 MEDIUM — CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
- CVSS 2.0 ([email protected])
- 4.3 MEDIUM — AV:N/AC:M/Au:N/C:P/I:N/A:N
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
Affected configurations
• apple mail
• bloop airmail
• emclient emclient
• flipdogsolutions maildroid
• freron mailmate
• horde horde imp
• microsoft outlook 2007
• mozilla thunderbird
• postbox-inc postbox
• r2mail2 r2mail2
• roundcube webmail
References
- http://flaked.sockpuppet.org/2018/05/16/a-unified-timeline.html Third Party Advisory
- http://www.securityfocus.com/bid/104162 Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1040904 Third Party Advisory, VDB Entry
- https://efail.de Exploit, Mitigation, Third Party Advisory
- https://lists.gnupg.org/pipermail/gnupg-users/2018-May/060334.html Third Party Advisory
- https://news.ycombinator.com/item?id=17066419 Issue Tracking, Third Party Advisory
- https://protonmail.com/blog/pgp-vulnerability-efail Issue Tracking, Third Party Advisory
- https://twitter.com/matthew_d_green/status/995996706457243648 Third Party Advisory
- https://www.patreon.com/posts/cybersecurity-15-18814817 Issue Tracking, Third Party Advisory
- https://www.synology.com/support/security/Synology_SA_18_22 Third Party Advisory
- http://flaked.sockpuppet.org/2018/05/16/a-unified-timeline.html Third Party Advisory
- http://www.securityfocus.com/bid/104162 Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1040904 Third Party Advisory, VDB Entry
- https://efail.de Exploit, Mitigation, Third Party Advisory
- https://lists.gnupg.org/pipermail/gnupg-users/2018-May/060334.html Third Party Advisory
- https://news.ycombinator.com/item?id=17066419 Issue Tracking, Third Party Advisory
- https://protonmail.com/blog/pgp-vulnerability-efail Issue Tracking, Third Party Advisory
- https://twitter.com/matthew_d_green/status/995996706457243648 Third Party Advisory
- https://www.patreon.com/posts/cybersecurity-15-18814817 Issue Tracking, Third Party Advisory
- https://www.synology.com/support/security/Synology_SA_18_22 Third Party Advisory