CWE-1236: Improper Neutralization of Formula Elements in a CSV File
ID
CWE-1236
Abstraction
Base
Structure
Simple
Status
Incomplete
Number of CVEs
219
The product saves user-provided information into a Comma-Separated Value (CSV) file, but it does not neutralize or incorrectly neutralizes special elements that could be interpreted as a command when the file is opened by a spreadsheet product.
User-provided data is often saved to traditional databases. This data can be exported to a CSV file, which allows users to read the data using spreadsheet software such as Excel, Numbers, or Calc. This software interprets entries beginning with '=' as formulas, which are then executed by the spreadsheet software. The software's formula language often allows methods to access hyperlinks or the local command line, and frequently allows enough characters to invoke an entire script. Attackers can populate data fields which, when saved to a CSV file, may attempt information exfiltration or other malicious activity when automatically executed by the spreadsheet software.
Modes of Introduction
| Phase | Note |
|---|---|
| Implementation | The weakness is in the implementation of a software's CSV export feature, in particular how it formats formula entries as the output gets flattened into a text file. |
Applicable Platforms
| Type | Class | Name | Prevalence |
|---|---|---|---|
| Language | Not Language-Specific | ||
| Operating_system | Not OS-Specific | ||
| Architecture | Not Architecture-Specific | ||
| Technology | Other |
Relationships
| View | Weakness | |||||||
|---|---|---|---|---|---|---|---|---|
| # ID | View | Status | # ID | Name | Abstraction | Structure | Status | |
| CWE-1000 | Research Concepts | Draft | CWE-74 | Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') | Class | Simple | Incomplete | |
| CWE-1003 | Weaknesses for Simplified Mapping of Published Vulnerabilities | Incomplete | CWE-74 | Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') | Class | Simple | Incomplete | |
CVEs Published
CVSS Severity
CVSS Severity - By Year
CVSS Base Score
| # CVE | Description | CVSS | EPSS | EPSS Trend (30 days) | Affected Products | Weaknesses | Security Advisories | Exploits | PoC | Pubblication Date | Modification Date |
|---|---|---|---|---|---|---|---|---|---|---|---|
| # CVE | Description | CVSS | EPSS | EPSS Trend (30 days) | Affected Products | Weaknesses | Security Advisories | PoC | Pubblication Date | Modification Date |
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