CVE-2018-20764 Information

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 Vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Reference

https://community.helpsystems.com/knowledge-base/fox-technologies/hotfix/515/

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

9.8