Vulnerability Details : CVE-2022-40276

Zettlr version 2.3.0 allows an external attacker to remotely obtain arbitrary local files on any client that attempts to view a malicious markdown file through Zettlr. This is possible because the application does not have a CSP policy (or at least not strict enough) and/or does not properly validate the contents of markdown files before rendering them.

Vulnerability category: Input validation

Published 2022-11-03 20:15:31

Updated 2022-11-05 01:26:12

Source Fluid Attacks

View at NVD, CVE.org

Exploit prediction scoring system (EPSS) score for CVE-2022-40276

Probability of exploitation activity in the next 30 days: 0.05%

Percentile, the proportion of vulnerabilities that are scored at or less: ~ 19 % EPSS Score History EPSS FAQ

CVSS scores for CVE-2022-40276

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Source
5.5	MEDIUM	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N	1.8	3.6	nvd@nist.gov
Attack Vector: Local Attack Complexity: Low Privileges Required: None User Interaction: Required Scope: Unchanged Confidentiality: High Integrity: None Availability: None

CWE ids for CVE-2022-40276

CWE-20 Improper Input Validation

The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.

Assigned by: nvd@nist.gov (Primary)

References for CVE-2022-40276

https://fluidattacks.com/advisories/avicii/

Zettlr 2.3.0 - Local File Read | Advisories | Fluid Attacks
Exploit;Third Party Advisory
https://github.com/Zettlr/Zettlr

GitHub - Zettlr/Zettlr: A Markdown Editor for the 21st century.
Product;Third Party Advisory

CVEs referencing this url

Products affected by CVE-2022-40276

Zettlr » Zettlr » Version: 2.3.0
cpe:2.3:a:zettlr:zettlr:2.3.0:*:*:*:*:*:*:*
Matching versions