CVE-2022-27858

Activity Log <= 2.8.3 - CSV Injection

2022-09-26 00:00

Strategic Overview

Status: Patched in 2.8.4
Affected Plugin: Activity Log – Monitor User and Agent Changes
Affected Version: <= 2.8.3
CVSS: 8.3High
Weakness type: CWE-1236 · Improper Neutralization of Formula Elements in a CSV File
CVE: CVE-2022-27858

View all Activity Log – Monitor User and Agent Changes vulnerabilities

At a glance

CVE-2022-27858 is a high-severity Improper Neutralization of Formula Elements in a CSV File vulnerability in the Activity Log WordPress plugin, affecting versions <= 2.8.3. It carries a CVSS score of 8.3 (reachable over the network; low attack complexity). Exploitation requires no authentication. The issue is fixed in version 2.8.4; sites on affected versions should update now. Disclosed September 2022, reported by Universe.

Vulnerability Overview

The Activity Log plugins for WordPress is vulnerable to CSV Injection in versions up to, and including, 2.8.3. This allows unauthenticated 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 privileges on the target site, and no interaction from a victim user.

CWE-1236: Improper Neutralization of Formula Elements in a CSV File

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.

Remediation

Update to version 2.8.4, or a newer patched version

How does WordSec protect against this?

The attempt arrives as an ordinary request to Activity Log: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Activity Log 2.8.4 closes this, and updating the plugin is the step that ends it.

Firewall
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2022-27858 https://www.wordfence.com/threat-intel/vulnerabilities/id/506e4f47-e292-4d19-a7bb-b87d752f4007 https://nvd.nist.gov/vuln/detail/CVE-2022-27858

Related records

Other vulnerabilities in Activity Log – Monitor User and Agent Changes

CVSS Vector

8.3

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

Base

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

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