CVE-2018-9035

Contact Form 7 to Database Extension 2.10.32 - CSV Injection

2018-04-09 00:00

Strategic Overview

Status: Patched in 2.10.36
Affected Plugin: Contact Form DB
Affected Version: 2.10.32
CVSS: 8.6High
Weakness type: CWE-74 · Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
CVE: CVE-2018-9035

View all Contact Form DB vulnerabilities

At a glance

CVE-2018-9035 is a high-severity Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') vulnerability in the Contact Form DB WordPress plugin, affecting versions 2.10.32. It carries a CVSS score of 8.6 (low attack complexity; high confidentiality, integrity, availability impact). Exploitation requires no authentication. The issue is fixed in version 2.10.36; sites on affected versions should update now. Disclosed April 2018.

Vulnerability Overview

CSV Injection vulnerability in ExportToCsvUtf8.php of the Contact Form 7 to Database Extension plugin 2.10.32 for WordPress allows remote attackers to inject spreadsheet formulas into CSV files via the contact form.

Technical Analysis

The vector marks this flaw as requiring local or adjacent access, with low attack complexity — no special timing or configuration is needed, and no privileges on the target site. A successful exploit has high impact on confidentiality, integrity, availability — full site compromise territory.

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 2.10.36, or a newer patched version

How does WordSec protect against this?

The attempt arrives as an ordinary request to Contact Form DB: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Contact Form DB 2.10.36 closes this, and updating the plugin is the step that ends it.

Firewall
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2018-9035 https://www.wordfence.com/threat-intel/vulnerabilities/id/c694f5e5-43eb-453c-98d7-0d575d53df1a https://nvd.nist.gov/vuln/detail/CVE-2018-9035

Related records

Other vulnerabilities in Contact Form DB

CVSS Vector

8.6

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

Base

Attack VectorLocal
Attack ComplexityLow
Privileges RequiredNone
User InteractionRequired
ScopeChanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh

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