CVE-2022-39028
7.5 · HIGHOverview
CVE-2022-39028 is a high-severity vulnerability affecting gnu inetutils. It was published on August 30, 2022 and has a CVSS 3.1 base score of 7.5 (HIGH).
This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
telnetd in GNU Inetutils through 2.3, MIT krb5-appl through 1.0.3, and derivative works has a NULL pointer dereference via 0xff 0xf7 or 0xff 0xf8. In a typical installation, the telnetd application would crash but the telnet service would remain available through inetd. However, if the telnetd application has many crashes within a short time interval, the telnet service would become unavailable after inetd logs a "telnet/tcp server failing (looping), service terminated" error. NOTE: MIT krb5-appl is not supported upstream but is shipped by a few Linux distributions. The affected code was removed from the supported MIT Kerberos 5 (aka krb5) product many years ago, at version 1.8.
Remediation
Check the references section for vendor advisories and patches from gnu. Update inetutils 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 |
|---|---|---|---|
| gnu | inetutils | 0 | Affected |
| mit | kerberos_5 | 0 | Affected |
| netkit-telnet_project | netkit-telnet | 0 | Affected |
References
Frequently Asked Questions
What is CVE-2022-39028?
CVE-2022-39028 is a high-severity vulnerability affecting gnu inetutils. It was published on August 30, 2022 and has a CVSS 3.1 base score of 7.5 (HIGH).
How severe is CVE-2022-39028?
This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2022-39028?
Check the references section for vendor advisories and patches from gnu. Update inetutils 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-2022-39028?
CyberStrike's AI-powered security agents can automatically detect CVE-2022-39028 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.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
Automated penetration testing that runs continuously, not just quarterly.
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