Home/CVE/The S/MIME specification allows a Cipher Block Chaining (CBC) malleability-gadget attack that can indirectly lead to pla
CVE

CVE-2017-17689

The S/MIME specification allows a Cipher Block Chaining (CBC) malleability-gadget attack that can indirectly lead to pla

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

MEDIUM · CVSS 5.9 EPSS 0.00447
Schedule remediation
  • Public exploit or PoC is available
Sigma rules8 YARA rules0
▤

Affected Products & Versions

17
9folders nineall versions
apple mailall versions
bloop airmailall versions
emclientall versions
flipdogsolutions maildroidall versions
freron mailmateall versions
gnome evolutionall versions
google gmailall versions
⚠

Public Exploits & PoCs

1
pocefail.deefail.de
◈

Sigma Hunt Rules

8
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
producthighSuspicious File Created in Outlook Temporary Directory
producthighSuspicious Outlook Macro Created
producthighPotential Persistence Via Outlook Form
producthighSuspicious Execution From Outlook Temporary Folder
producthighSuspicious Remote Child Process From Outlook
producthighSuspicious Outlook Child Process
▣

Scoring & Timeline

5.9
MEDIUM · CVSS v3.0 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD16 May 2018 · 07:29 PM
CVSS VectorCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
⚑

Vendor Advisories

6
usnUSN-7731-1
usnUSN-7730-1
usnUSN-7729-1
suse-csafopenSUSE-SU-2024:10736-1
suse-csafopenSUSE-SU-2018:1329-1
🔗

References & Sources

5
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://www.securityfocus.com/bid/104165Third Party AdvisoryVDB Entry
https://news.ycombinator.com/item?id=17066419Issue TrackingThird Party Advisory
https://pastebin.com/gNCc8aYmThird Party Advisory
https://twitter.com/matthew_d_green/status/996371541591019520Third Party Advisory
https://www.synology.com/support/security/Synology_SA_18_22Third Party Advisory
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