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CVE-2017-17688

Date: May 16, 2018

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

Severity Score

Related Resources (13)

https://www.patreon.com/posts/cybersecurity-15-18814817
https://security-tracker.debian.org/tracker/CVE-2017-17688
https://nvd.nist.gov/vuln/detail/CVE-2017-17688
https://news.ycombinator.com/item?id=17066419
http://flaked.sockpuppet.org/2018/05/16/a-unified-timeline.html
https://protonmail.com/blog/pgp-vulnerability-efail
https://efail.de
https://lists.gnupg.org/pipermail/gnupg-users/2018-May/060334.html
http://www.securitytracker.com/id/1040904
https://twitter.com/matthew_d_green/status/995996706457243648
http://www.securityfocus.com/bid/104162
https://www.synology.com/support/security/Synology_SA_18_22
https://www.mend.io/vulnerability-database/CVE-2017-17688

Severity Score

Weakness Type (CWE)

Insufficient Information

NVD-CWE-noinfo

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): HIGH
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): NONE
Availability (A): NONE

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): MEDIUM
Authentication (AU): NONE
Confidentiality (C): PARTIAL
Integrity (I): NONE
Availability (A): NONE
Additional information:

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