VAR-200712-0406
Vulnerability from variot - Updated: 2025-04-10 23:11Gesytec Easylon OPC Server before 2.3.44 does not properly validate server handles, which allows remote attackers to execute arbitrary code or cause a denial of service via unspecified network traffic to the OLE for Process Control (OPC) interface, probably related to free operations on arbitrary memory addresses through certain Remove functions, and read and write operations on arbitrary memory addresses through certain Set, Read, and Write functions. Gesytec Easylon OPC Server Does not properly validate the server handle, so arbitrary code may be executed or denial of service (DoS) There is a vulnerability that will be in a state. Easylon OPC Server is a system control server software used in the field of industrial automation. This issue affects versions prior to Easylon OPC Server 2.3.44.
2003: 2,700 advisories published 2004: 3,100 advisories published 2005: 4,600 advisories published 2006: 5,300 advisories published
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The vulnerability is caused due to an error when validating server handles and can be exploited to e.g.
SOLUTION: Update to version 2.3.44 or later. ftp://ftp.gesytec.de/pub/opc/
PROVIDED AND/OR DISCOVERED BY: Neutralbit
ORIGINAL ADVISORY: VU#205073: http://www.kb.cert.org/vuls/id/205073
About: This Advisory was delivered by Secunia as a free service to help everybody keeping their systems up to date against the latest vulnerabilities.
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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