CVE-2018-3991

Public Exploit

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.

Category

10.0
CVSS
Severity: Critical
CVSS 3.0 •
CVSS 2.0 •
EPSS 74.58% Top 5%
Third-Party Advisory securityfocus.com Third-Party Advisory siemens.com Third-Party Advisory siemens.com Third-Party Advisory talosintelligence.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://www.securityfocus.com/bid/107005 third party advisory vdb entry
https://cert-portal.siemens.com/productcert/pdf/ssa-844562.pdf third party advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-760124.pdf mitigation third party advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-902727.pdf
https://talosintelligence.com/vulnerability_reports/TALOS-2018-0659 third party advisory exploit

Frequently Asked Questions

What is the severity of CVE-2018-3991?
CVE-2018-3991 has been scored as a critical severity vulnerability.
How to fix CVE-2018-3991?
To fix CVE-2018-3991, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2018-3991 being actively exploited in the wild?
It is possible that CVE-2018-3991 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~75% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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