Quiz and Survey Master <= 7.0.0 - Arbitrary File Upload

2020-08-03 00:00

Chloe Chamberland

Strategic Overview

Status

Patched in 7.0.1

Affected PluginQuiz and Survey Master (QSM) – Quiz Maker & Survey Maker

Affected Version< 7.0.1

CVSS9.8Critical

CVECVE-2020-35949

View all Quiz and Survey Master (QSM) – Quiz Maker & Survey Maker vulnerabilities

Vulnerability Overview

An issue was discovered in the Quiz and Survey Master plugin before 7.0.1 for WordPress. It made it possible for unauthenticated attackers to upload arbitrary files and achieve remote code execution. If a quiz question could be answered by uploading a file, only the Content-Type header was checked during the upload, and thus the attacker could use text/plain for a .php file.

Technical Analysis

REMEDIATION: Update to version 7.0.1, or a newer patched version --- IDENTIFIER: CWE-434 (Unrestricted Upload of File with Dangerous Type) The product allows the upload or transfer of dangerous file types that are automatically processed within its environment.

External References

https://www.cve.org/CVERecord?id=CVE-2020-35949 https://www.wordfence.com/threat-intel/vulnerabilities/id/bfd93c33-4672-4914-b052-7bea283ef60c

CVSS Vector

9.8

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh

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