Denial of Service via Excessive Form Parts in PHP 8.0-27, 8.1-15, 8.2-2
CVE-2023-0662 Published on February 16, 2023
DoS vulnerability when parsing multipart request body
In PHP 8.0.X before 8.0.28, 8.1.X before 8.1.16 and 8.2.X before 8.2.3, excessive number of parts in HTTP form upload can cause high resource consumption and excessive number of log entries. This can cause denial of service on the affected server by exhausting CPU resources or disk space.
Vulnerability Analysis
CVE-2023-0662 is exploitable with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity, and a high impact on availability.
Weakness Type
What is a Resource Exhaustion Vulnerability?
The software does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources.
CVE-2023-0662 has been classified to as a Resource Exhaustion vulnerability or weakness.
Products Associated with CVE-2023-0662
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Affected Versions
PHP Group PHP:- Version 8.0.x and below 8.0.28 is affected.
- Version 8.1.x and below 8.1.16 is affected.
- Version 8.2.x and below 8.2.3 is affected.
Vulnerable Packages
The following package name and versions may be associated with CVE-2023-0662
| Package Manager | Vulnerable Package | Versions | Fixed In |
|---|---|---|---|
| composer | react/http | >= 0.8.0, < 1.9.0 | 1.9.0 |
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.