CVE-2018-3991 — CRITICAL (10.0)

Vulnerability Description

An exploitable heap overflow vulnerability exists in the WkbProgramLow function of WibuKey Network server management, version 6.40.2402.500. A specially crafted TCP packet can cause a heap overflow, potentially leading to remote code execution. An attacker can send a malformed TCP packet to trigger this vulnerability.

CVSS Score

10.0

CRITICAL

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Wibu	Wibukey	6.40.2402.500
Microsoft	Windows	-
Siemens	Simatic Wincc Open Architecture	3.14

Related Weaknesses (CWE)

CWE-787

References

http://www.securityfocus.com/bid/107005Third Party AdvisoryVDB Entry
https://cert-portal.siemens.com/productcert/pdf/ssa-760124.pdfMitigationThird Party Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-844562.pdfThird Party Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-902727.pdf
https://talosintelligence.com/vulnerability_reports/TALOS-2018-0659ExploitThird Party Advisory
http://www.securityfocus.com/bid/107005Third Party AdvisoryVDB Entry
https://cert-portal.siemens.com/productcert/pdf/ssa-760124.pdfMitigationThird Party Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-844562.pdfThird Party Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-902727.pdf
https://talosintelligence.com/vulnerability_reports/TALOS-2018-0659ExploitThird Party Advisory

FAQ

What is CVE-2018-3991?

CVE-2018-3991 is a vulnerability with a CVSS score of 10.0 (CRITICAL). An exploitable heap overflow vulnerability exists in the WkbProgramLow function of WibuKey Network server management, version 6.40.2402.500. A specially crafted TCP packet can cause a heap overflow, p...

How severe is CVE-2018-3991?

CVE-2018-3991 has been rated CRITICAL with a CVSS base score of 10.0/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2018-3991?

Check the references section above for vendor advisories and patch information. Affected products include: Wibu Wibukey, Microsoft Windows, Siemens Simatic Wincc Open Architecture.