cbcvebase.
CVE-2018-8840
published 2018-04-18

CVE-2018-8840: A remote attacker could send a carefully crafted packet in InduSoft Web Studio v8.1 and prior versions, and/or InTouch Machine Edition 2017 v8.1 and prior…

PriorityP261critical9.8CVSS 3.0
AVNACLPRNUINSUCHIHAH
EPSS
8.32%
94.7th percentile
A remote attacker could send a carefully crafted packet in InduSoft Web Studio v8.1 and prior versions, and/or InTouch Machine Edition 2017 v8.1 and prior versions during a tag, alarm, or event related action such as read and write, which may allow remote code execution.

Affected

3 ranges
VendorProductVersion rangeFixed in
ics-certschneider_electric_indusoft_web_studio_and_intouch_machine_edition——
indusoftweb_studio<= 8.1—
industrial-softwareintouch_machine_edition_2017<= 8.1—

Detection & IOCsextracted from sources · hover to see the quote

  • →Trigger detection on crafted packets sent during tag, alarm, or event related actions (read/write) targeting InduSoft Web Studio or InTouch Machine Edition — these are the specific protocol operations that trigger the stack-based buffer overflow ↗
  • →The vulnerability is exploitable remotely without authentication (no credentials required); alert on unauthenticated connections to InduSoft/InTouch listener ports from external or untrusted network segments ↗
  • →Reference Nessus Plugin ID 109280 for detection of CVE-2018-8840 in vulnerability scanning pipelines targeting InduSoft Web Studio and InTouch Machine Edition ↗
  • →CVSS v3 base score 9.8 (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H) — network-accessible, no privileges, no user interaction required; prioritize detection on any network path to these HMI services ↗
  • ·Vendor security bulletin LFSEC00000125 provides additional patch guidance; detection should account for systems that have not yet applied SP1 ↗
  • ·The overflow is triggered specifically during tag, alarm, or event related actions — detection logic should focus on these protocol operation types rather than all traffic to the service ↗

CVSS provenance

nvdv3.09.8CRITICALCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
nvdv2.010.0CRITICALAV:N/AC:L/Au:N/C:C/I:C/A:C
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