CVE-2021-36798 - Vulnerability Details - OpenCVE

Description

A Denial-of-Service (DoS) vulnerability was discovered in Team Server in HelpSystems Cobalt Strike 4.2 and 4.3. It allows remote attackers to crash the C2 server thread and block beacons' communication with it.

Published: 2021-08-09

Score: 7.5 High

EPSS: 4.3% Low

KEV: No

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 [-]

OR	cpe:2.3:a:helpsystems:cobalt_strike:4.2:::::::*
	cpe:2.3:a:helpsystems:cobalt_strike:4.3:::::::*

No data.

No data available yet.

Remediation

No solution or workaround provided in the CVE record.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

Sign in to view the affected projects.

Advisories

No advisories yet.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

Access Vector Network

Access Complexity Low

Authentication None

Confidentiality Impact None

Integrity Impact None

Availability Impact Partial

This CVE is not in the KEV list.

The EPSS score is 0.04292.

Key SSVC decision points have not yet been added.

References

Link	Providers
https://labs.sentinelone.com/hotcobalt-new-cobalt-strike-dos-vulnerability-that-lets-you-halt-operations/
https://www.cobaltstrike.com/releasenotes.txt

History

No history.

Subscriptions

Helpsystems Cobalt Strike

MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2021-08-09T12:38:36.000Z

Updated: 2024-08-04T01:01:59.312Z

Reserved: 2021-07-19T00:00:00.000Z

Link: CVE-2021-36798

Vulnrichment

No data.

NVD

Status : Modified

Published: 2021-08-09T13:15:07.440

Modified: 2026-06-17T03:59:27.193

Link: CVE-2021-36798

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

CWE-770
Allocation of Resources Without Limits or Throttling

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