CVE-2022-43760: Github.com/rancher/rancher Cross-Site Scripting Vulnerability

MODERATE
Advisory Identifier: GHSA-46v3-ggjg-qq3x
CVSS 8.4
CWE-79
Published
Advisory Summary

CVE-2022-43760 is a MODERATE (CVSS 8.4) cross-site scripting vulnerability (CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) affecting Github.com/rancher/rancher libraries in the Go ecosystem. The issue involves rancher ui has multiple cross-site scripting (xss) issues. Remediation is available by upgrading affected packages to version 2.6.13, 2.7.4.

CVE-2022-43760 at a Glance

CVE Identifier CVE-2022-43760
GHSA Identifier GHSA-46v3-ggjg-qq3x
Severity MODERATE
CVSS v3.1 Base Score 8.4
CWE Classification CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Product Github.com/rancher/rancher
Package Ecosystem Go
Published Date
Last Updated

Security Impact

CVSS: 8.4

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:H).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required High (PR:H)
User Interaction Required (UI:R)
Scope Changed (S:C)
Confidentiality High (C:H)
Integrity High (I:H)
Availability High (A:H)

How to Fix CVE-2022-43760

To remediate this vulnerability, upgrade all affected Github.com/rancher/rancher dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

github.com/rancher/rancher fixed: 2.6.13
Upgrade github.com/rancher/rancher to 2.6.13
github.com/rancher/rancher fixed: 2.7.4
Upgrade github.com/rancher/rancher to 2.7.4
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release:

inspect dependencies for github.com/rancher/rancher

How to Check if You Are Affected

To determine whether your application is affected by CVE-2022-43760, inspect your project dependencies for Github.com/rancher/rancher:

inspect dependencies for github.com/rancher/rancher

Analyze the terminal output to locate any version of Github.com/rancher/rancher in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2.6.13), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting'), where the product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. In Github.com/rancher/rancher, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

### Impact Multiple Cross-Site Scripting (XSS) vulnerabilities have been identified in the Rancher UI. Cross-Site scripting allows a malicious user to inject code that is executed within another user's browser, allowing the attacker to steal sensitive information, manipulate web content, or perform other malicious activities on behalf of the victims. This could result in a user with write access to the affected areas being able to act on behalf of an administrator, once an administrator opens the affected web page. The affected areas include the Projects/Namespaces and Auth Provider sections. The attacker needs to be authenticated and have write access to those features in order to exploit the vulnerabilities. Some of the permissions (roles) required are: - Project Owner. - Restricted Admin. - Configure Authentication. - Administrator. - Custom RBAC Role that provides write access on Projects or External Authentication Providers. For users that suspect this vulnerability may have targeted their Rancher instance, we recommend rotating all API Keys and Kubeconfig tokens. It's also advised to review logs and possibly rotate credentials stored as secrets in Rancher and downstream cluster, if you believe that users' credentials to access Rancher and its clusters might have been compromised. ### Patches Patched versions include releases `2.6.13`, `2.7.4` and later versions. ### Workarounds There is no direct mitigation besides updating Rancher to a patched version. ### Credits We would like to recognize and thank @bybit-sec for the responsible disclosure of this security issue. ### For more information If you have any questions or comments about this advisory: - Reach out to the [SUSE Rancher Security team](https://github.com/rancher/rancher/security/policy) for security related inquiries. - Open an issue in the [Rancher](https://github.com/rancher/rancher/issues/new/choose) repository. - Verify with our [support matrix](https://www.suse.com/suse-rancher/support-matrix/all-supported-versions/) and [product support lifecycle](https://www.suse.com/lifecycle/).

CVE-2022-43760 Affected Github.com/rancher/rancher Versions

2 component(s)
Fixed Versions:
2.6.132.7.4
Product / Package Ecosystem Affected Versions Fixed Version
github.com/rancher/rancher
Go
≥ 2.6.0
< 2.6.13
2.6.13
github.com/rancher/rancher
Go
≥ 2.7.0
< 2.7.4
2.7.4

References

Frequently Asked Questions

What is CVE-2022-43760?
CVE-2022-43760 is a security vulnerability in Github.com/rancher/rancher involving Rancher UI has multiple Cross-Site Scripting (XSS) issues under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting').
Which Github.com/rancher/rancher versions are affected?
Affected versions include releases prior to 2.6.13, 2.7.4 across affected packages: github.com/rancher/rancher.
What version fixes CVE-2022-43760?
Upgrading to 2.6.13, 2.7.4 (or the latest patched release for your respective branch) resolves the vulnerability.
Is github.com/rancher/rancher affected?
Yes, github.com/rancher/rancher is affected in releases prior to 2.6.13, 2.7.4. Upgrade your dependency to 2.6.13, 2.7.4 or later.
What is the CVSS score of CVE-2022-43760?
CVE-2022-43760 has a CVSS v3.1 base score of 8.4 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:H.
What CWE is associated with CVE-2022-43760?
CVE-2022-43760 is classified under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') (The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.).
How can I check Go dependencies for CVE-2022-43760?
Run the dependency tree command: 'inspect dependencies for github.com/rancher/rancher'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-46v3-ggjg-qq3x",
  "modified" : "2024-09-16T15:05:11Z",
  "published" : "2023-06-06T01:59:54Z",
  "aliases" : [ "CVE-2022-43760" ],
  "summary" : "Rancher UI has multiple Cross-Site Scripting (XSS) issues",
  "details" : "### Impact\nMultiple Cross-Site Scripting (XSS) vulnerabilities have been identified in the Rancher UI. \nCross-Site scripting allows a malicious user to inject code that is executed within another user's browser, allowing the attacker to steal sensitive information, manipulate web content, or perform other malicious activities on behalf of the victims. This could result in a user with write access to the affected areas being able to act on behalf of an administrator, once an administrator opens the affected web page.\n\nThe affected areas include the Projects/Namespaces and Auth Provider sections. The attacker needs to be authenticated and have write access to those features in order to exploit the vulnerabilities. Some of the permissions (roles) required are:\n\n- Project Owner.\n- Restricted Admin.\n- Configure Authentication.\n- Administrator.\n- Custom RBAC Role that provides write access on Projects or External Authentication Providers.\n\nFor users that suspect this vulnerability may have targeted their Rancher instance, we recommend rotating all API Keys and Kubeconfig tokens.\n\nIt's also advised to review logs and possibly rotate credentials stored as secrets in Rancher and downstream cluster, if you believe that users' credentials to access Rancher and its clusters might have been compromised.\n\n### Patches\nPatched versions include releases `2.6.13`, `2.7.4` and later versions.\n\n### Workarounds\nThere is no direct mitigation besides updating Rancher to a patched version.\n\n### Credits\nWe would like to recognize and thank @bybit-sec for the responsible disclosure of this security issue.\n\n### For more information\nIf you have any questions or comments about this advisory:\n\n- Reach out to the [SUSE Rancher Security team](https://github.com/rancher/rancher/security/policy) for security related inquiries.\n- Open an issue in the [Rancher](https://github.com/rancher/rancher/issues/new/choose) repository.\n- Verify with our [support matrix](https://www.suse.com/suse-rancher/support-matrix/all-supported-versions/) and [product support lifecycle](https://www.suse.com/lifecycle/).",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:H"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/rancher/rancher"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "2.6.0"
      }, {
        "fixed" : "2.6.13"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/rancher/rancher"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "2.7.0"
      }, {
        "fixed" : "2.7.4"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/rancher/rancher/security/advisories/GHSA-46v3-ggjg-qq3x"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2022-43760"
  }, {
    "type" : "WEB",
    "url" : "https://bugzilla.suse.com/show_bug.cgi?id=CVE-2022-43760"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/rancher/rancher"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/rancher/rancher/releases/tag/v2.6.13"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/rancher/rancher/releases/tag/v2.7.4"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-06-06T01:59:54Z",
    "nvd_published_at" : "2023-06-01T13:15:10Z"
  }
}