CVE-2017-17689

medium

Description

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

References

https://www.synology.com/support/security/Synology_SA_18_22

https://twitter.com/matthew_d_green/status/996371541591019520

https://pastebin.com/gNCc8aYm

https://news.ycombinator.com/item?id=17066419

http://www.securityfocus.com/bid/104165

Details

Source: Mitre, NVD

Published: 2018-05-16

Updated: 2019-10-03

Risk Information

CVSS v2

Base Score: 4.3

Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:N/A:N

Severity: Medium

CVSS v3

Base Score: 5.9

Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N