CVE-2018-3991 — An exploitable heap overflow vulnerability exists in the WkbProgramLow function

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 TC

01What is this vulnerability?

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.

02Affected products

Vendor	Product	Versions
n	a / n/a	n/a

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2019-02-05T22:00:00.000Z
• Last modified: 2024-08-05T04:57:24.691Z

09References

• www.securityfocus.com — http://www.securityfocus.com/bid/107005
• cert-portal.siemens.com — https://cert-portal.siemens.com/productcert/pdf/ssa-844562.pdf
• cert-portal.siemens.com — https://cert-portal.siemens.com/productcert/pdf/ssa-760124.pdf
• cert-portal.siemens.com — https://cert-portal.siemens.com/productcert/pdf/ssa-902727.pdf
• talosintelligence.com — https://talosintelligence.com/vulnerability_reports/TALOS-2018-0659