CVE-2020-9466

Export Users to CSV < 1.4 - CSV Injection

2019-09-19 00:00

Strategic Overview

Status: Patched in 1.4
Affected Plugin: Export Users to CSV
Affected Version: < 1.4
CVSS: 7.4High
Weakness type: CWE-74 · Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
CVE: CVE-2020-9466

View all Export Users to CSV vulnerabilities

At a glance

CVE-2020-9466 is a high-severity Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') vulnerability in the Export Users to CSV WordPress plugin, affecting versions < 1.4. It carries a CVSS score of 7.4 (reachable over the network; low attack complexity). The issue is fixed in version 1.4; sites on affected versions should update now. Disclosed September 2019, reported by Jinson Varghese Behanan.

Vulnerability Overview

The Export Users Plugin for WordPress is vulnerable to CSV Injection in versions up to, and including, 1.3.2. This allows authenticated attackers to embed untrusted input into exported CSV files, which can result in code execution when these files are downloaded and opened on a local system with a vulnerable configuration.

Technical Analysis

The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no interaction from a victim user.

CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')

The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component.

Remediation

Update to version 1.4, or a newer patched version

How does WordSec protect against this?

The attempt arrives as an ordinary request to Export Users to CSV: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Export Users to CSV 1.4 closes this, and updating the plugin is the step that ends it.

Firewall
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2020-9466 https://www.wordfence.com/threat-intel/vulnerabilities/id/aa309da6-6552-43e4-aeea-f822493dd029 https://nvd.nist.gov/vuln/detail/CVE-2020-9466

CVSS Vector

7.4

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

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredLow
User InteractionNone
ScopeChanged
ConfidentialityLow
IntegrityLow
AvailabilityLow

This record contains material that is subject to copyright

CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE®). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy.

https://www.cve.org/Legal/TermsOfUse

Defiant hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute this software vulnerability information. Any copy of the software vulnerability information you make for such purposes is authorized provided that you include a hyperlink to this vulnerability record and reproduce Defiant's copyright designation and this license in any such copy.

https://www.wordfence.com/wordfence-intelligence-terms-and-conditions/