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Norman API Cross-site Scripting Vulnerability

High severity GitHub Reviewed Published Feb 8, 2024 in rancher/norman • Updated Oct 16, 2024

Package

gomod github.com/rancher/norman (Go)

Affected versions

< 0.0.0-20240207153100-3bb70b772b52

Patched versions

0.0.0-20240207153100-3bb70b772b52

Description

Impact

A vulnerability has been identified in which unauthenticated cross-site scripting (XSS) in Norman's public API endpoint can be exploited. This can lead to an attacker exploiting the vulnerability to trigger JavaScript code and execute commands remotely.

The attack vector was identified as a Reflected XSS.

Norman API propagates malicious payloads from user input to the UI, which renders the output. For example, a malicious URL gets rendered into a script that is executed on a page.

The changes addressed by this fix are:

  • Encode input that comes from the request URL before adding it to the response.
  • The request input is escaped by changing the URL construction that is used for links to use url.URL.
  • The request input is escaped by escaping the JavaScript and CSS variables with attribute encoding as defined by OWASP.

Patches

Patched versions include the following commits:

Branch Commit
master 3bb70b7
release/v2.8 a6a6cf5
release/v2.7 cb54924
release/v2.7.s3 7b2b467
release/v2.6 bd13c65

Workarounds

There is no direct mitigation besides updating Norman API to a patched version.

References

If you have any questions or comments about this advisory:

References

@andypitcher andypitcher published to rancher/norman Feb 8, 2024
Published to the GitHub Advisory Database Feb 8, 2024
Reviewed Feb 8, 2024
Published by the National Vulnerability Database Oct 16, 2024
Last updated Oct 16, 2024

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
High
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:H/A:L

EPSS score

0.043%
(10th percentile)

Weaknesses

CVE ID

CVE-2023-32193

GHSA ID

GHSA-r8f4-hv23-6qp6

Source code

Credits

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