CVE-2021-40511 - Vulnerability Details - OpenCVE

Description

OBDA systems’ Mastro 1.0 is vulnerable to XML Entity Expansion (aka “billion laughs”) attack allowing denial of service.

Published: 2022-06-21

Score: 7.5 High

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 [-]

cpe:2.3:a:obdasystems:mastro:1.0:*:*:*:*:*:*:*

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-2021-27687	OBDA systems’ Mastro 1.0 is vulnerable to XML Entity Expansion (aka “billion laughs”) attack allowing denial of service.

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 0.00875.

Key SSVC decision points have not yet been added.

References

Link	Providers
https://www.cyberiskvision.com/advisory/
https://www.obdasystems.com/mastro

History

No history.

Subscriptions

Obdasystems Mastro

MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2022-06-21T16:09:35.000Z

Updated: 2024-08-04T02:44:10.847Z

Reserved: 2021-09-04T00:00:00.000Z

Link: CVE-2021-40511

Vulnrichment

No data.

NVD

Status : Modified

Published: 2022-06-21T17:15:08.243

Modified: 2026-06-17T04:07:04.173

Link: CVE-2021-40511

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

CWE-776
Improper Restriction of Recursive Entity References in DTDs ('XML Entity Expansion')

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