VulnerabilityModified
CVE-2017-17688
The OpenPGP specification allows a Cipher Feedback Mode (CFB) malleability-gadget attack that can indirectly lead to plaintext exfiltration, aka EFAIL.
MEDIUM 5.9EPSS 5.66%
Does this matter?
Lower severity and a low EPSS score (5.66%). Track it; it rarely justifies an emergency change on its own.
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
- CVSS 3.0
- 5.9 MEDIUMCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
- EPSS
- 5.66% probability · 93th percentile
- CISA KEV
- Not listed
- Affected
- apple/mail · bloop/airmail · emclient/emclient · flipdogsolutions/maildroid · freron/mailmate · horde/horde imp · microsoft/outlook · mozilla/thunderbird · postbox-inc/postbox · r2mail2/r2mail2 · roundcube/webmail
- Source
- cve@mitre.org
References
- http://flaked.sockpuppet.org/2018/05/16/a-unified-timeline.htmlThird Party Advisory
- http://www.securityfocus.com/bid/104162Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1040904Third Party Advisory, VDB Entry
- https://efail.deExploit, Mitigation, Third Party Advisory
- https://lists.gnupg.org/pipermail/gnupg-users/2018-May/060334.htmlThird Party Advisory
- https://news.ycombinator.com/item?id=17066419Issue Tracking, Third Party Advisory
- https://protonmail.com/blog/pgp-vulnerability-efailIssue Tracking, Third Party Advisory
- https://twitter.com/matthew_d_green/status/995996706457243648Third Party Advisory
- https://www.patreon.com/posts/cybersecurity-15-18814817Issue Tracking, Third Party Advisory
- https://www.synology.com/support/security/Synology_SA_18_22Third Party Advisory
- http://flaked.sockpuppet.org/2018/05/16/a-unified-timeline.htmlThird Party Advisory
- http://www.securityfocus.com/bid/104162Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1040904Third Party Advisory, VDB Entry
- https://efail.deExploit, Mitigation, Third Party Advisory
- https://lists.gnupg.org/pipermail/gnupg-users/2018-May/060334.htmlThird Party Advisory
- https://news.ycombinator.com/item?id=17066419Issue Tracking, Third Party Advisory
- https://protonmail.com/blog/pgp-vulnerability-efailIssue Tracking, Third Party Advisory
- https://twitter.com/matthew_d_green/status/995996706457243648Third Party Advisory
- https://www.patreon.com/posts/cybersecurity-15-18814817Issue Tracking, Third Party Advisory
- https://www.synology.com/support/security/Synology_SA_18_22Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.