| Name | 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 |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| Debian Bugs | 898630 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| enigmail (PTS) | jessie, jessie (lts) | 2:1.9.9-1~deb8u1 | vulnerable |
| buster | 2:2.2.4-0.2~deb10u1 | fixed |
| buster (security), buster (lts) | 2:2.1.3+ds1-4~deb10u2 | fixed |
| bullseye | 2:2.2.4-0.3 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| enigmail | source | wheezy | (unfixed) | end-of-life | | |
| enigmail | source | jessie | (unfixed) | end-of-life | | |
| enigmail | source | (unstable) | 2:2.0.6.1-4 | | | 898630 |
Notes
[jessie] - enigmail <end-of-life> (see https://lists.debian.org/debian-lts-announce/2019/02/msg00002.html)
vulnerability is in the clients handling, not in OpenPGP
https://efail.de
possibly https://sourceforge.net/p/enigmail/source/ci/f6c111 and https://sourceforge.net/p/enigmail/source/ci/d2a83a
Marking the first 2.x version which reached unstable as fixed, see discussion in #898630