CVE-2018-20764 - Vulnerability Details - OpenCVE

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.

Published: 2019-02-08

Score: 9.8 Critical

EPSS: < 1% Very Low

KEV: No

Impact:

Action:

Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

n/a

n/a

affected

Version	Status	Constraints
`n/a`	affected	—

Configuration 1 [-]

AND

cpe:2.3:a:helpsystems:boks:*:*:*:*:*:*:*:*

cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*

No data.

No data available yet.

Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

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Advisories

Source	ID	Title
EUVD	EUVD-2018-13307	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.

No CVSS v4.0

No CVSS v3.1

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

Access Vector Network

Access Complexity Low

Authentication None

Confidentiality Impact Partial

Integrity Impact Partial

Availability Impact Partial

This CVE is not in the KEV list.

The EPSS score is 0.00682.

Key SSVC decision points have not yet been added.

References

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

History

No history.

Subscriptions

Helpsystems Boks

Linux Linux Kernel

MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2019-02-08T17:00:00.000Z

Updated: 2024-08-05T12:12:27.601Z

Reserved: 2019-02-08T00:00:00.000Z

Link: CVE-2018-20764

Vulnrichment

No data.

NVD

Status : Modified

Published: 2019-02-08T17:29:00.303

Modified: 2024-11-21T04:02:07.300

Link: CVE-2018-20764

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

NVD-CWE-noinfo

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