CVE-2017-17689
MEDIUM 5.9EPSS 4.2%
The S/MIME specification allows a Cipher Block Chaining (CBC) malleability-gadget attack that can indirectly lead to plaintext exfiltration, aka EFAIL.
- CVSS v3.0 NVD
- 5.9 MEDIUM
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N - CVSS v2.0 NVD
- 4.3 MEDIUM
AV:N/AC:M/Au:N/C:P/I:N/A:N - EPSS
- 4.22% chance of exploitation in the next 30 days, 91st percentile
- Published
- 2018-05-16
- Updated
- 2024-08-05
Proof-of-concept exploits (1)
- jaads/Efail-malleability-gadget-exploit6★ · 2022-11-24
Security advisories
- http://www.securityfocus.com/bid/104165
- https://efail.de
- https://news.ycombinator.com/item?id=17066419
- https://pastebin.com/gNCc8aYm
- https://twitter.com/matthew_d_green/status/996371541591019520
- https://www.synology.com/support/security/Synology_SA_18_22