RCE in Trendmicro Interscan Messaging Security Virtual Appliance
CVE-2017-6398
An issue was discovered in Trend Micro InterScan Messaging Security (Virtual Appliance) 9.1-1600. An authenticated user can execute a terminal command in the context of the web server user (which is root). Besides, the default installation of IMSVA comes with default administrator credentials. The saveCert.imss endpoint takes several user inputs and performs blacklisting. After that, it uses them as arguments to a predefined operating-system command without proper sanitization. However, because of an improper blacklisting rule, it's possible to inject arbitrary commands into it.
Vulnerability class: Command Injection (OS Command Injection)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.541 (99.0th percentile), scored .
High probability of exploitation in the next 30 days — patch promptly. 99th percentile — 99.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.541 · newest: 0.541 · change: 0.000
Affected products
- Trendmicro Interscan Messaging Security Virtual Appliance — versions 9.1-1600
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.securityfocus.com/bid/96859 (vdb-entry)
- www.rapid7.com/db/modules/exploit/linux/http/trend_micro_imsva_exec (Third Party Advisory)
Frequently asked questions
- What is CVE-2017-6398?
- CVE-2017-6398 is a high-severity vulnerability in Trendmicro Interscan Messaging Security Virtual Appliance, classified under OS Command Injection. CVSS score: 8.8/10. Published 2017-03-14.
- How severe is CVE-2017-6398?
- High severity. CVSS v3 base score is 8.8 out of 10.
- Is CVE-2017-6398 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.