CVE-2021-42911 - Vulnerability Details - OpenCVE

Description

A Format String vulnerability exists in DrayTek Vigor 2960 <= 1.5.1.3, DrayTek Vigor 3900 <= 1.5.1.3, and DrayTek Vigor 300B <= 1.5.1.3 in the mainfunction.cgi file via a crafted HTTP message containing malformed QUERY STRING, which could let a remote malicious user execute arbitrary code.

Published: 2022-03-29

Score: 9.8 Critical

EPSS: 3.9% 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:o:draytek:vigor2960_firmware:*:*:*:*:*:*:*:*

cpe:2.3:h:draytek:vigor2960:-:*:*:*:*:*:*:*

Configuration 2 [-]

AND

cpe:2.3:o:draytek:vigor3900_firmware:*:*:*:*:*:*:*:*

cpe:2.3:h:draytek:vigor3900:-:*:*:*:*:*:*:*

Configuration 3 [-]

AND

cpe:2.3:o:draytek:vigor300b_firmware:*:*:*:*:*:*:*:*

cpe:2.3:h:draytek:vigor300b:-:*:*:*:*:*:*:*

No data.

No data available yet.

Remediation

No vendor fix or workaround currently provided.

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 High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

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 0.03869.

Key SSVC decision points have not yet been added.

References

Link	Providers
https://gist.github.com/Cossack9989/e9c1c2d2e69b773ca4251acdd77f2835

History

No history.

Subscriptions

Draytek Vigor2960 Vigor2960 Firmware Vigor300b Vigor300b Firmware Vigor3900 Vigor3900 Firmware

MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2022-03-29T19:30:16.000Z

Updated: 2024-08-04T03:47:12.398Z

Reserved: 2021-10-25T00:00:00.000Z

Link: CVE-2021-42911

Vulnrichment

No data.

NVD

Status : Modified

Published: 2022-03-29T20:15:07.690

Modified: 2024-11-21T06:28:17.733

Link: CVE-2021-42911

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

CWE-134

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