Vulnerability Description
A buffer overflow exists in HelpSystems tcpcrypt on Linux, used for BoKS encrypted telnet through BoKS version 6.7.1. Since tcpcrypt is setuid, exploitation leads to privilege escalation.
CVSS Score
9.8
CRITICAL
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Helpsystems | Boks | >= 6.6.0, <= 6.7.1 |
| Linux | Linux Kernel | - |
References
- https://community.helpsystems.com/knowledge-base/fox-technologies/hotfix/515/Vendor Advisory
- https://community.helpsystems.com/knowledge-base/fox-technologies/hotfix/515/Vendor Advisory
FAQ
What is CVE-2018-20764?
CVE-2018-20764 is a vulnerability with a CVSS score of 9.8 (CRITICAL). A buffer overflow exists in HelpSystems tcpcrypt on Linux, used for BoKS encrypted telnet through BoKS version 6.7.1. Since tcpcrypt is setuid, exploitation leads to privilege escalation.
How severe is CVE-2018-20764?
CVE-2018-20764 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2018-20764?
Check the references section above for vendor advisories and patch information. Affected products include: Helpsystems Boks, Linux Linux Kernel.