CVE-2017-17689
UnknownEPSS 4.22%
Last modified
CVE-2017-17689 is a vulnerability of currently unknown severity. The S/MIME specification allows a Cipher Block Chaining (CBC) malleability-gadget attack that can indirectly lead to plaintext exfiltration, aka EFAIL.. EPSS estimates a 4.22% chance of exploitation in the next 30 days.
Description
The S/MIME specification allows a Cipher Block Chaining (CBC) malleability-gadget attack that can indirectly lead to plaintext exfiltration, aka EFAIL.
Metrics
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| 9folders | Nine | All versions |
| Apple | All versions | |
| Bloop | Airmail | All versions |
| Emclient | Emclient | All versions |
| Flipdogsolutions | Maildroid | All versions |
| Freron | Mailmate | All versions |
| Gnome | Evolution | All versions |
| Gmail | All versions | |
| Horde | Horde Imp | All versions |
| Ibm | Notes | All versions |
| Kde | Kmail | All versions |
| Kde | Trojita | All versions |
| Microsoft | Outlook | 2007 |
| Microsoft | Outlook | 2010 |
| Microsoft | Outlook | 2013 |
| Microsoft | Outlook | 2016 |
| Mozilla | Thunderbird | All versions |
| Postbox-Inc | Postbox | All versions |
| R2mail2 | R2mail2 | All versions |
| Ritlabs | The Bat | All versions |
References
- http://www.securityfocus.com/bid/104165Third Party Advisory, VDB Entry
- https://efail.deExploit, Mitigation, Third Party Advisory
- https://news.ycombinator.com/item?id=17066419Issue Tracking, Third 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
- http://www.securityfocus.com/bid/104165Third Party Advisory, VDB Entry
- https://efail.deExploit, Mitigation, Third Party Advisory
- https://news.ycombinator.com/item?id=17066419Issue Tracking, Third 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
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is 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.
How severe is CVE-2017-17689?
Severity scoring for CVE-2017-17689 is pending analysis. The EPSS model estimates a 4.22% probability of exploitation in the next 30 days.
How do I fix CVE-2017-17689?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2017-17689?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST