CVEvulnerability

CVE-2018-20764

9.8 CRITICAL Published 2019-02-08 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2019-02-08
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.0 ([email protected])
9.8 CRITICAL — CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0 ([email protected])
7.5 HIGH — AV:N/AC:L/Au:N/C:P/I:P/A:P

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.

Affected configurations

• helpsystems boks (>= 6.6.0 <= 6.7.1)

References