Overview
- Description
- PTC’s KEPServerEX Versions 6.0 to 6.14.263 are vulnerable to being made to read a recursively defined object that leads to uncontrolled resource consumption. KEPServerEX uses OPC UA, a protocol which defines various object types that can be nested to create complex arrays. It does not implement a check to see if such an object is recursively defined, so an attack could send a maliciously created message that the decoder would try to decode until the stack overflowed and the device crashed.
- Source
- ics-cert@hq.dhs.gov
- NVD status
- Analyzed
Risk scores
CVSS 3.1
- Type
- Primary
- Base score
- 7.5
- Impact score
- 3.6
- Exploitability score
- 3.9
- Vector string
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Severity
- HIGH
Social media
- Hype score
- Not currently trending
Configurations
[
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:kepware:kepserverex:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "4BCC4117-EFB3-4627-941D-B105A539D986",
"versionEndIncluding": "6.14.263",
"versionStartIncluding": "6.0.0"
}
],
"operator": "OR"
}
]
}
]