OServer Out of Bounds Read

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Summary

CVECVE-2014-0777
StatePUBLISHED
Assignericscert
Source PriorityCVE Program / NVD first with legacy fallback
Published2014-04-11 16:55:03 UTC
Updated2026-05-06 22:30:45 UTC
DescriptionThe Modbus slave/outstation driver in the OPC Drivers 1.0.20 and earlier in IOServer OPC Server allows remote attackers to cause a denial of service (out-of-bounds read and daemon crash) via a crafted packet.

Risk And Classification

Primary CVSS: v2.0 7.8 from [email protected]

AV:N/AC:L/Au:N/C:N/I:N/A:C

Problem Types: CWE-125 | CWE-119 | CWE-125 CWE-125

VersionSourceTypeScoreSeverityVector
2.0[email protected]Primary7.8AV:N/AC:L/Au:N/C:N/I:N/A:C
2.0[email protected]Secondary8.3AV:N/AC:M/Au:N/C:P/I:P/A:C
2.0CNACVSS8.3AV:N/AC:M/Au:N/C:P/I:P/A:C

CVSS v2.0 Breakdown

Access Vector
Network
Access Complexity
Low
Authentication
None
Confidentiality
None
Integrity
None
Availability
Complete

AV:N/AC:L/Au:N/C:N/I:N/A:C

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Ioserver Ioserver Opc Server - All All All
Application Ioserver Opc Drivers All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA IOServer OPC Drivers affected 1.0.20 custom Not specified

References

ReferenceSourceLinkTags
IOServer Out of Bounds Read Vulnerability | ICS-CERT af854a3a-2127-422b-91ae-364da2661108 ics-cert.us-cert.gov US Government Resource
www.cisa.gov/news-events/ics-advisories/icsa-14-100-01 [email protected] www.cisa.gov
www.ioserver.com [email protected] www.ioserver.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Chris Sistrunk of Mandiant and Adam Crain of Automatak (en)

Additional Advisory Data

Solutions

CNA: IOServer has produced a new version that mitigates the vulnerability. The new version, Beta2112.exe, is available for download here:  http://www.ioserver.com/

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