Vulnerability Name:

CVE-2017-17688

Assigned:2017-12-15
Published:2018-05-14
Updated:2018-05-17
Summary:** 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.
CVSS v3 Severity:5.3 Medium (CCN CVSS v3 Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N)
4.6 Medium (CCN Temporal CVSS v3 Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): High
Privileges Required (PR): None
User Interaction (UI): Required
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): None
Availibility (A): None
CVSS v2 Severity:4.9 Medium (CCN CVSS v2 Vector: AV:N/AC:H/Au:S/C:C/I:N/A:N)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): High
Athentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): Complete
Integrity (I): None
Availibility (A): None
References:Source: MISC
Type: UNKNOWN
http://flaked.sockpuppet.org/2018/05/16/a-unified-timeline.html

Source: BID
Type: UNKNOWN
104162

Source: SECTRACK
Type: UNKNOWN
1040904

Source: MISC
Type: UNKNOWN
https://efail.de

Source: XF
Type: UNKNOWN
openpgp-cve201717688-info-disc(143326)

Source: MISC
Type: UNKNOWN
https://lists.gnupg.org/pipermail/gnupg-users/2018-May/060334.html

Source: MISC
Type: UNKNOWN
https://news.ycombinator.com/item?id=17066419

Source: MISC
Type: UNKNOWN
https://protonmail.com/blog/pgp-vulnerability-efail

Source: MISC
Type: UNKNOWN
https://twitter.com/matthew_d_green/status/995996706457243648

Source: MISC
Type: UNKNOWN
https://www.patreon.com/posts/cybersecurity-15-18814817

Source: CONFIRM
Type: UNKNOWN
https://www.synology.com/support/security/Synology_SA_18_22

Vulnerable Configuration:
Configuration CCN 1:
  • cpe:/a:microsoft:outlook:2007:*:*:*:*:*:*:*
  • OR cpe:/a:apple:mail:*:*:*:*:*:*:*:*
  • OR cpe:/a:mozilla:thunderbird:16.0:*:*:*:*:*:*:*
  • OR cpe:/a:mozilla:thunderbird:24.0:*:*:*:*:*:*:*
  • OR cpe:/a:mozilla:thunderbird:17.0:*:*:*:*:*:*:*
  • OR cpe:/a:mozilla:thunderbird:45.5.0:*:*:*:*:*:*:*
  • OR cpe:/a:mozilla:thunderbird:52.5.1:*:*:*:*:*:*:*

  • Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:org.opensuse.security:def:201717688
    V
    CVE-2017-17688
    2018-05-25
    oval:com.ubuntu.artful:def:201717688000
    V
    CVE-2017-17688 on Ubuntu 17.10 (artful) - medium.
    2018-05-16
    oval:com.ubuntu.trusty:def:201717688000
    V
    CVE-2017-17688 on Ubuntu 14.04 LTS (trusty) - medium.
    2018-05-16
    oval:com.ubuntu.xenial:def:201717688000
    V
    CVE-2017-17688 on Ubuntu 16.04 LTS (xenial) - medium.
    2018-05-16
    BACK
    microsoft outlook 2007
    apple mail *
    mozilla thunderbird 16.0
    mozilla thunderbird 24.0
    mozilla thunderbird 17.0
    mozilla thunderbird 45.5.0
    mozilla thunderbird 52.5.1