CyberSecBulletin
CVE-2023-23447NVD status: Modified

SICK FTMG-ESD15AXX AIR FLOW SENSOR: Uncontrolled Resource Consumption

Published Updated By the CyberSecBulletin desk

CVE-2023-23447 is a high-severity uncontrolled resource consumption vulnerability in SICK FTMG-ESD15AXX AIR FLOW SENSOR from SICK, with a CVSS 3.1 base score of 7.5 out of 10. It can be exploited remotely over the network by an unauthenticated attacker, without any action from a user. The record lists version v3.0.0.131.Release as the first without the flaw, so updating SICK FTMG-ESD15AXX AIR FLOW SENSOR to that release or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 1.12% chance of exploitation within 30 days, higher than 67% of scored CVEs.

Next patch cycle

High severity with no evidence of exploitation so far.

What to do

  1. Update SICK FTMG-ESD15AXX AIR FLOW SENSOR to v3.0.0.131.Release or a later version.
  2. Update SICK FTMG-ESD20AXX AIR FLOW SENSOR to v3.0.0.131.Release or a later version.
  3. Update SICK FTMG-ESD25AXX AIR FLOW SENSOR to v3.0.0.131.Release or a later version.
  4. Read the advisory on sick.com for workarounds and exact fixed builds.
  5. Until you can update, restrict network access to the affected service so it is not reachable from untrusted networks.

Affected products and versions

VendorProductAffected versionsFixed in
SICKSICK FTMG-ESD15AXX AIR FLOW SENSORbefore v3.0.0.131.Releasev3.0.0.131.Release
SICKSICK FTMG-ESD20AXX AIR FLOW SENSORbefore v3.0.0.131.Releasev3.0.0.131.Release
SICKSICK FTMG-ESD25AXX AIR FLOW SENSORbefore v3.0.0.131.Releasev3.0.0.131.Release
SICKSICK FTMG-ESN40SXX AIR FLOW SENSORbefore v3.0.0.131.Releasev3.0.0.131.Release
SICKSICK FTMG-ESN50SXX AIR FLOW SENSORbefore v3.0.0.131.Releasev3.0.0.131.Release
SICKSICK FTMG-ESR40SXX AIR FLOW SENSORbefore v3.0.0.131.Releasev3.0.0.131.Release
SICKSICK FTMG-ESR50SXX AIR FLOW SENSORbefore v3.0.0.131.Releasev3.0.0.131.Release
SickFtmg-esd20axx Firmwarebefore 2.02.0
SickFtmg-esd25axx Firmwarebefore 2.02.0
SickFtmg-esn40sxx Firmwarebefore 2.02.0
SickFtmg-esn50sxx Firmwarebefore 2.02.0
SickFtmg-esr50sxx Firmwarebefore 2.02.0
SickFtmg-esr40sxx Firmwarebefore 2.02.0
SickFtmg-esd15axx Firmwarebefore 2.02.0

Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.

How the severity score breaks down

Attack vector
NetworkCan be exploited remotely over a network, including the internet.
Attack complexity
LowNo special conditions are needed; the attack works reliably.
Privileges required
NoneNo account or login is needed.
User interaction
NoneNo action by a victim is required.
Scope
UnchangedImpact stays within the vulnerable component.
Confidentiality
NoneNo data is disclosed.
Integrity
NoneNothing can be modified.
Availability
HighThe component can be taken down completely.

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H. Scored by NVD.

Scoring systemScoreSeverityScored by
CVSS 3.17.5HighCNA (sick.de)
CVSS 3.17.5HighNVD

Official description

Uncontrolled Resource Consumption in SICK FTMg AIR FLOW SENSOR with Partnumbers 1100214, 1100215, 1100216, 1120114, 1120116, 1122524, 1122526 allows an unprivileged remote attacker to influence the availability of the webserver by invocing several open file requests via the REST interface.

Source: the CVE record as published by its numbering authority, via NVD and CVE.org.

The underlying weakness: Uncontrolled Resource Consumption

The product does not properly control the allocation and maintenance of a limited resource.

How developers prevent this class of flaw

  • Ensure that protocols have specific limits of scale placed on them.
  • Ensure that all failures in resource allocation place the system into a safe posture.

More Uncontrolled Resource Consumption vulnerabilities (CWE-400)

Timeline

  1. CVE record published.
  2. CISA published its SSVC assessment (exploitation: none, automatable: yes, technical impact: partial).
  3. Record last changed materially (score, affected products, status or references).

References

Other vulnerabilities in SICK FTMG-ESD15AXX AIR FLOW SENSOR

All SICK FTMG-ESD15AXX AIR FLOW SENSOR vulnerabilities

Recent Uncontrolled Resource Consumption vulnerabilities

Spotted an error? Tell us.