RCE in Dbltek Web Server

CVE-2017-16934

The web server on DBL DBLTek devices allows remote attackers to execute arbitrary OS commands by obtaining the admin password via a frame.html?content=/dev/mtdblock/5 request, and then using this password for the HTTP Basic Authentication needed for a change_password.csp request, which supports a "<%%25call system.exec:" string in the passwd parameter.

Vulnerability class: Command Injection (OS Command Injection)

Published · last modified .

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.135 (96.3th percentile), scored .

Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 96th percentile — 96.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2017-16934: held from 0.135 to 0.135.

EPSS over last 30 days · oldest: 0.135 · newest: 0.135 · change: 0.000

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2017-16934?
CVE-2017-16934 is a critical-severity vulnerability in Dbltek Web Server, classified under OS Command Injection. CVSS score: 9.8/10. Published 2017-11-24.
How severe is CVE-2017-16934?
Critical severity. CVSS v3 base score is 9.8 out of 10.