CVE-2017-18911
CRITICALCVSS 9.1/10EPSS 0.67%
Last modified
CVE-2017-18911 is a critical-severity vulnerability rated 9.1/10 on the CVSS scale. An issue was discovered in Mattermost Server before 3.8.2, 3.7.5, and 3.6.7. The X.509 certificate validation can be skipped for a TLS-based e-mail server.. EPSS estimates a 0.67% chance of exploitation in the next 30 days.
Description
An issue was discovered in Mattermost Server before 3.8.2, 3.7.5, and 3.6.7. The X.509 certificate validation can be skipped for a TLS-based e-mail server.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Mattermost | Mattermost Server | < 3.6.7 |
| Mattermost | Mattermost Server | >= 3.7.0, < 3.7.5 |
| Mattermost | Mattermost Server | >= 3.8.0, < 3.8.2 |
References
- https://mattermost.com/security-updates/Vendor Advisory
- https://mattermost.com/security-updates/Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2017-18911?
An issue was discovered in Mattermost Server before 3.8.2, 3.7.5, and 3.6.7. The X.509 certificate validation can be skipped for a TLS-based e-mail server.
How severe is CVE-2017-18911?
CVE-2017-18911 has a CVSS score of 9.1/10 (CRITICAL severity). The EPSS model estimates a 0.67% probability of exploitation in the next 30 days.
How do I fix CVE-2017-18911?
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.
Are you affected by CVE-2017-18911?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST