CVE-2017-17688 The advisory has been revoked - it doesn't affect any version of package enigmail (opens in a new tab)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UBUNTU1904-ENIGMAIL-617080
- published10 Sept 2020
- disclosed16 May 2018
Introduced: 16 May 2018
CVE-2017-17688 (opens in a new tab)Amendment
The Ubuntu security team deemed this advisory irrelevant for Ubuntu:19.04.
NVD Description
Note: Versions mentioned in the description apply only to the upstream enigmail package and not the enigmail package as distributed by Ubuntu.
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
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2017-17688
- http://www.securityfocus.com/bid/104162
- https://www.synology.com/support/security/Synology_SA_18_22
- http://flaked.sockpuppet.org/2018/05/16/a-unified-timeline.html
- 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
- http://www.securitytracker.com/id/1040904