CVE-2017-17689

Publication date 16 May 2018

Last updated 15 September 2025

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

5.9 · Medium

Score breakdown

Description

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

Read the notes from the security team

Status

Package Ubuntu Release Status
kmail 25.04 plucky
Not affected
24.10 oracular Ignored end of life, was needs-triage
24.04 LTS noble
Not affected
23.10 mantic Ignored end of life, was needs-triage
23.04 lunar Ignored end of life, was needs-triage
22.10 kinetic Ignored end of life, was needs-triage
22.04 LTS jammy
Not affected
21.10 impish Ignored end of life
21.04 hirsute Ignored end of life
20.10 groovy Ignored end of life
20.04 LTS focal
Not affected
19.10 eoan Ignored end of life
19.04 disco Ignored end of life
18.10 cosmic Ignored end of life
18.04 LTS bionic
Fixed 4:17.12.3-0ubuntu1+esm1
17.10 artful Ignored end of life
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
thunderbird 25.04 plucky
Fixed 1:60.2.1+build1-0ubuntu1
24.10 oracular
Fixed 1:60.2.1+build1-0ubuntu1
24.04 LTS noble
Fixed 1:60.2.1+build1-0ubuntu1
23.10 mantic
Fixed 1:60.2.1+build1-0ubuntu1
23.04 lunar
Fixed 1:60.2.1+build1-0ubuntu1
22.10 kinetic
Fixed 1:60.2.1+build1-0ubuntu1
22.04 LTS jammy
Fixed 1:60.2.1+build1-0ubuntu1
21.10 impish
Fixed 1:60.2.1+build1-0ubuntu1
21.04 hirsute
Fixed 1:60.2.1+build1-0ubuntu1
20.10 groovy
Fixed 1:60.2.1+build1-0ubuntu1
20.04 LTS focal
Fixed 1:60.2.1+build1-0ubuntu1
19.10 eoan
Fixed 1:60.2.1+build1-0ubuntu1
19.04 disco
Fixed 1:60.2.1+build1-0ubuntu1
18.10 cosmic
Fixed 1:60.2.1+build1-0ubuntu1
18.04 LTS bionic
Fixed 1:52.8.0+build1-0ubuntu0.18.04.1
17.10 artful
Fixed 1:52.8.0+build1-0ubuntu0.17.10.1
16.04 LTS xenial
Fixed 1:52.8.0+build1-0ubuntu0.16.04.1
14.04 LTS trusty
Fixed 1:52.8.0+build1-0ubuntu0.14.04.1
evolution 25.04 plucky
Not affected
24.10 oracular
Not affected
24.04 LTS noble
Not affected
23.10 mantic
Not affected
23.04 lunar
Not affected
22.10 kinetic
Not affected
22.04 LTS jammy
Not affected
21.10 impish
Not affected
21.04 hirsute
Not affected
20.10 groovy
Not affected
20.04 LTS focal
Not affected
19.10 eoan
Not affected
19.04 disco
Not affected
18.10 cosmic
Not affected
18.04 LTS bionic
Not affected
17.10 artful Ignored end of life
16.04 LTS xenial
Not affected
14.04 LTS trusty Not in release
kf5-messagelib 25.04 plucky Not in release
24.04 LTS noble
Not affected
22.04 LTS jammy
Not affected
20.04 LTS focal
Not affected
18.04 LTS bionic
Fixed 4:17.12.3-0ubuntu3+esm1
kdepim 25.04 plucky Not in release
24.04 LTS noble Not in release
22.04 LTS jammy Not in release
16.04 LTS xenial
Fixed 4:15.12.3-0ubuntu1.1+esm1
14.04 LTS trusty
Fixed 4:4.13.3-0ubuntu0.2+esm1

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Notes

mdeslaur

evolution upstream doesn't belive this is an issue, marking as not-affected in thunderbird, this was called CVE-2018-5162

ej7367

In bionic, the patch for kmail depends on the two patches for kf5-messagelib. In xenial and trusty, the vulnerable code for kmail and kf5-messagelib is in the kdepim package.

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
kmail
kf5-messagelib
kdepim

Severity score breakdown

Parameter Value
Base score 5.9 · Medium
Attack vector Network
Attack complexity High
Privileges required None
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact None
Availability impact None
Vector CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

References

Related Ubuntu Security Notices (USN)

    • USN-7729-1
    • KDE PIM vulnerabilities
    • 2 September 2025
    • USN-7730-1
    • PIM Messagelib vulnerabilities
    • 2 September 2025
    • USN-7731-1
    • KMail vulnerabilities
    • 2 September 2025

Other references