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Remote Code Execution in `WP_HTML_Token`

Moderate
peterwilsoncc published GHSA-m257-q4m5-j653 Apr 3, 2024

Package

WordPress (WordPress)

Affected versions

>= 6.4.0 <6.4.2

Patched versions

6.4.2

Description

Impact

Unserialization of instances of the WP_HTML_Token class allows for code execution via its __destruct() magic method.

Patches

This issue was fixed in WordPress 6.4.2 on December 6th, 2023. Versions prior to 6.4.0 are not affected.

References

This vulnerability was not responsibly disclosed to the WordPress security team and was published publicly as a zero-day vulnerability. Find out more about responsibly reporting security vulnerabilities.

Severity

Moderate

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
High
User interaction
None
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N

CVE ID

CVE-2024-31211

Weaknesses

No CWEs