CVE-2017-16743CWE-285

An Improper Authorization issue was discovered in PHOENIX CONTACT FL SWITCH 3xxx, 4xxx, and 48xxx Series products running firmware Version 1.0 to 1.32

published January 12, 2018

CVSS
—
EPSS
3%
Percentile
87.6
In the wild
Unconfirmed
What it is

⚠️ A crafty HTTP request is all it takes! An unauthorized user can bypass web-service authentication in PHOENIX CONTACT FL SWITCH devices running old firmware—like a sneaky guest slipping through the hotel lobby without checking in. 🔥 Think of it like a visitor getting past the front desk at a hotel without a reservation. They can access the administrative suite, enjoying all the perks without any authentication! With this vulnerability, attackers could gain administrative privileges and potentially control the device, leading to data breaches or unauthorized alterations. This could open the floodgates for attacks on your network and devices, making it a serious concern!

Put simply

Think of it like a visitor getting past the front desk at a hotel without a reservation. They can access the administrative suite, enjoying all the perks without any authentication! This vulnerability stems from improper authorization in the web services used by the PHOENIX CONTACT FL SWITCH series, allowing unauthorized HTTP requests to bypass authentication checks. Attackers can exploit this flaw without needing any credentials.

What to do

With this vulnerability, attackers could gain administrative privileges and potentially control the device, leading to data breaches or unauthorized alterations. This could open the floodgates for attacks on your network and devices, making it a serious concern! Immediate action is required! Upgrade the firmware to the latest version (beyond 1.32) to patch this vulnerability. Regularly audit your devices and ensure that all are updated to prevent exploitation. You've got this! Patch those devices and secure your network—security hero status: activated! 🛡️

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.03111 · 87.6th percentile
Weakness
CWE-285 · Improper Authorization
Published
2018-01-12T20:00Z
EPSS history
Timeline
  • 12 JAN 20:00Z
    An Improper Authorization issue was discovered in PHOENIX CONTACT FL SWITCH 3xxx, 4xxx, and 48xxx Series products running firmware Version 1.0 to 1.32
    cvelistv5