synced 4 MIN AGO
01 Record

CVE-2017-17689

The S/MIME specification allows a Cipher Block Chaining (CBC) malleability-gadget attack that can indirectly lead to plaintext exfiltration, aka EFAIL.

UnratedPUBLISHEDCNA: mitre
CNA base scoreUnratedNo CNA CVSS vector

02 Description

The S/MIME specification allows a Cipher Block Chaining (CBC) malleability-gadget attack that can indirectly lead to plaintext exfiltration, aka EFAIL.

03 Exploitation and scoring

Exploitation
Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision
Not assessed by CISA
EPSS probability
4.14% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 90.7% of scored records. A rank, not a probability.
NVD base score
5.9 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
NVD analysis status
Modified. NVD last modified this record on 2026-06-17.
Red Hat severity
Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2018-05-16 19:00Z8 YR AGO
Last updated
2024-08-05 20:59Z2 YR AGO
Reserved
2017-12-15
Assigning CNA
mitre
Record state
PUBLISHED
Severity
Not rated by the issuing CNA
CNA CVSS vector
Not published by the issuing CNA
Weaknesses
  • CWE-200Exposure of Sensitive Information to an Unauthorized ActorClass
Data version
5.1
Document digest
2f9140c94749159fab2a0ec0a0e75c3db4159b8267dcf5691ee29541956eb409

05 Affected products

VendorProductVersionsPlatforms
9foldersnineNot specified—
applemailNot specified—
bloopairmailNot specified—
emclientemclientNot specified—
flipdogsolutionsmaildroidNot specified—
freronmailmateNot specified—
gnomeevolutionNot specified—
googlegmailNot specified—
hordehorde_impNot specified—
ibmnotesNot specified—
kdekmailNot specified—
kdetrojitaNot specified—
microsoftoutlookNot specified—
mozillathunderbirdNot specified—
postbox-incpostboxNot specified—
r2mail2r2mail2Not specified—
redhatenterprise_linuxNot specified—
ritlabsthe_batNot specified—

06 References

07 Fixed in

Debian 12

  • evolution
    No fix yet
  • kf5-messagelib
    Fixed in 4:18.08.1-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

  • evolution
    No fix yet

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

  • evolution
    No fix yet

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 14.04 LTS

  • thunderbird
    Fixed in 1:52.8.0+build1-0ubuntu0.14.04.1

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 16.04 LTS

  • thunderbird
    Fixed in 1:52.8.0+build1-0ubuntu0.16.04.1

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 18.04 LTS

  • thunderbird
    Fixed in 1:52.8.0+build1-0ubuntu0.18.04.1

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro 14.04 LTS

  • kdepim
    Fixed in 4:4.13.3-0ubuntu0.2+esm1
    Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro 16.04 LTS

  • kdepim
    Fixed in 4:15.12.3-0ubuntu1.1+esm1
    Available with Ubuntu Pro: https://ubuntu.com/pro

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro 18.04 LTS

  • kf5-messagelib
    Fixed in 4:17.12.3-0ubuntu3+esm1
    Available with Ubuntu Pro: https://ubuntu.com/pro
  • kmail
    Fixed in 4:17.12.3-0ubuntu1+esm1
    Available with Ubuntu Pro: https://ubuntu.com/pro

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.