CVE-2017-17688

NameCVE-2017-17688
Description** 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.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
NVD severitymedium (attack range: remote)
Debian Bugs898630

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
enigmail (PTS)jessie (security), jessie2:1.9.9-1~deb8u1vulnerable
stretch (security), stretch2:1.9.9-1~deb9u1vulnerable
buster, sid2:2.0.8-5vulnerable

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
enigmailsource(unstable)(unfixed)medium898630

Notes

[stretch] - enigmail <ignored> (Package broken in stable, can be fixed along when updated for ESR60)
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

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