CVE-2018-5731
7.0 · HIGHOverview
CVE-2018-5731 is a high-severity vulnerability affecting heimdalsecurity heimdal. It was published on March 22, 2018 and has a CVSS 3.0 base score of 7.0 (HIGH).
This vulnerability has a CVSS 3.0 base score of 7.0, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.
Technical Description
An issue was discovered in Heimdal PRO 2.2.190. As part of the scanning feature, a process called md.hs writes an executable called CS1.tmp to C:\windows\TEMP. Afterwards the executable is run. It is possible for an attacker to create the file first, let md.hs overwrite it, and then rewrite the file in the window between md.hs closing the file and executing it. This can be exploited via opportunistic locks and a high priority thread. The vulnerability is triggered when a scan starts. NOTE: any affected Heimdal products are completely unrelated to the Heimdal vendor of a Kerberos 5 product on the h5l.org web site.
Remediation
Check the references section for vendor advisories and patches from heimdalsecurity. Update heimdal 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
| Vendor | Product | Versions | Status |
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Frequently Asked Questions
What is CVE-2018-5731?
CVE-2018-5731 is a high-severity vulnerability affecting heimdalsecurity heimdal. It was published on March 22, 2018 and has a CVSS 3.0 base score of 7.0 (HIGH).
How severe is CVE-2018-5731?
This vulnerability has a CVSS 3.0 base score of 7.0, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2018-5731?
Check the references section for vendor advisories and patches from heimdalsecurity. Update heimdal 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-2018-5731?
CyberStrike's AI-powered security agents can automatically detect CVE-2018-5731 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
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