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Stored XSS on log screen via unsanitized request logging.

High
0x41c published GHSA-cvf7-7mvq-5694 Oct 30, 2023

Package

packages/web/maintenance/logtoview.php (PHP)

Affected versions

< 1.5.10.15

Patched versions

1.5.10.15

Description

Impact

Due to a lack of request sanitization in the logs, a malicious request containing XSS would be stored in a log file. When an administrator of the FOG server logged in and viewed the logs, they would be parsed as HTML and displayed accordingly.

Patches

Patched in commit 2e2421f19620669b9930f72fb73a8dbc5efe4980, and version 1.5.10.15.

Workarounds

View logs from an external text editor rather than the dashboard when on versions < 1.5.10.15

Severity

High

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
None
User interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
Low
Availability
Low

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:N/UI:R/S:U/C:H/I:L/A:L

CVE ID

CVE-2023-46235

Weaknesses

Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)

The product receives input from an upstream component, but it does not neutralize or incorrectly neutralizes special characters such as <, >, and & that could be interpreted as web-scripting elements when they are sent to a downstream component that processes web pages. Learn more on MITRE.

Credits