CVE-2022-24775

guzzlehttp/psr7 <= 1.84 and 2.0.0-2.1.0 - Improper Input Validation

2022-07-19 00:00

Strategic Overview

Status: Patched in 1.0.5
Affected Plugin: Insert Special Characters
Affected Version: <= 1.0.4
CVSS: 7.5High
Weakness type: CWE-20 · Improper Input Validation
CVE: CVE-2022-24775

View all Insert Special Characters vulnerabilities

At a glance

CVE-2022-24775 is a high-severity Improper Input Validation vulnerability in the Insert Special Characters WordPress plugin, affecting versions <= 1.0.4. It carries a CVSS score of 7.5 (reachable over the network; low attack complexity; high integrity impact). Exploitation requires no authentication. The issue is fixed in version 1.0.5; sites on affected versions should update now. Disclosed July 2022.

Vulnerability Overview

guzzlehttp/psr7 is a PSR-7 HTTP message library. Versions prior to 1.8.4 and 2.1.1 are vulnerable to improper header parsing. An attacker could sneak in a new line character and pass untrusted values. The issue is patched in 1.8.4 and 2.1.1. There are currently no known workarounds. Some WordPress plugins and themes use this dependency though that doesn’t necessarily mean the plugin itself is vulnerable to exploitation.

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. A successful exploit has high impact on integrity.

CWE-20: Improper Input Validation

Reaching this weakness in Insert Special Characters <= 1.0.4 takes a caller who can reach the endpoint. Improper input validation means the application accepts input without confirming it has the form, type or range the code downstream assumes.

The concrete impact depends on where the unvalidated value lands, which is why records in this class range from cosmetic bugs to full compromise. For Insert Special Characters the fix is 1.0.5: builds <= 1.0.4 are affected, anything from 1.0.5 onward is not.

Remediation

Update to version 1.0.5, or a newer patched version

How does WordSec protect against this?

The attempt arrives as an ordinary request to Insert Special Characters: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Insert Special Characters 1.0.5 closes this, and updating the plugin is the step that ends it.

Firewall
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2022-24775 https://www.wordfence.com/threat-intel/vulnerabilities/id/07b34541-25df-407b-8d56-16e3e510d83a https://nvd.nist.gov/vuln/detail/CVE-2022-24775

Related records

Other vulnerabilities in Insert Special Characters

CVSS Vector

7.5

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

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged
ConfidentialityNone
IntegrityHigh
AvailabilityNone

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