CVE-2017-17688
First published: Wed May 16 2018(Updated: )
** DISPUTED ** 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.
Credit: cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Apple Mail | ||
| 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 | ||
| =2007 | ||
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Reference Links
- 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
Frequently Asked Questions
What is CVE-2017-17688?
CVE-2017-17688 is a vulnerability in the OpenPGP specification that allows a Cipher Feedback Mode (CFB) malleability-gadget attack leading to plaintext exfiltration.
What is the severity of CVE-2017-17688?
The severity of CVE-2017-17688 is medium, with a severity value of 5.9.
Which software is affected by CVE-2017-17688?
The following software is affected by CVE-2017-17688: Apple Mail, Bloop Airmail, Emclient Emclient, Flipdogsolutions Maildroid, Freron Mailmate, Horde Horde Imp, Microsoft Outlook (2007 version), Mozilla Thunderbird, Postbox-inc Postbox, R2mail2 R2mail2, Roundcube Webmail.
How does CVE-2017-17688 work?
CVE-2017-17688 allows a malleability-gadget attack that can indirectly lead to plaintext exfiltration by exploiting the Cipher Feedback Mode (CFB) in the OpenPGP specification.
Are there any references for CVE-2017-17688?
Yes, you can find references for CVE-2017-17688 at the following links: http://flaked.sockpuppet.org/2018/05/16/a-unified-timeline.html, http://www.securityfocus.com/bid/104162, http://www.securitytracker.com/id/1040904
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- canonical/flipdogsolutions maildroid
- vendor/freron
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