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CVE-2015-3963

5.8 · MEDIUM

Wind River VxWorks before 5.5.1, 6.5.x through 6.7.x before 6.7.1.1, 6.8.x before 6.8.3, 6.9.x before 6.9.4.4, and 7.x before 7 ipnet_coreip 1.2.2.0, as used on Schneider Electric SAGE RTU devices…

Published Aug 4, 2015windriverCWE-330EPSS 3.74%

Overview

CVE-2015-3963 is a medium-severity vulnerability affecting windriver vxworks. It was published on August 4, 2015 and has a CVSS 2.0 base score of 5.8 (MEDIUM).

This vulnerability has a CVSS 2.0 base score of 5.8, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

Wind River VxWorks before 5.5.1, 6.5.x through 6.7.x before 6.7.1.1, 6.8.x before 6.8.3, 6.9.x before 6.9.4.4, and 7.x before 7 ipnet_coreip 1.2.2.0, as used on Schneider Electric SAGE RTU devices before J2 and other devices, does not properly generate TCP initial sequence number (ISN) values, which makes it easier for remote attackers to spoof TCP sessions by predicting an ISN value.

Remediation

Check the references section for vendor advisories and patches from windriver. Update vxworks to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus
windrivervxworks6.5Affected

References

Refwww.schneider-electric.com/ww/en/download/document/SEVD-2015-162-01Refwww.securityfocus.com/bid/75302Refwww.securitytracker.com/id/1032730Refwww.securitytracker.com/id/1033181Refics-cert.us-cert.gov/advisories/ICSA-15-169-01Refics-cert.us-cert.gov/advisories/ICSA-15-169-01ARefsecurity.netapp.com/advisory/ntap-20160324-0001/Refwww.schneider-electric.com/ww/en/download/document/SEVD-2015-162-01Refwww.securityfocus.com/bid/75302Refwww.securitytracker.com/id/1032730

How CyberStrike helps

Frequently asked questions

What is CVE-2015-3963?

CVE-2015-3963 is a medium-severity vulnerability affecting windriver vxworks. It was published on August 4, 2015 and has a CVSS 2.0 base score of 5.8 (MEDIUM).

How severe is CVE-2015-3963?

This vulnerability has a CVSS 2.0 base score of 5.8, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2015-3963?

Check the references section for vendor advisories and patches from windriver. Update vxworks to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2015-3963?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2015-3963 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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