CVE-2022-31076: CloudCore UDS Server Malicious Message Can Crash CloudCore Vulnerability

MODERATE
Advisory Identifier: GHSA-8f4f-v9x5-cg6j
CVSS 4.2
CWE-476
Published
Advisory Summary

CVE-2022-31076 is a MODERATE (CVSS 4.2) malicious message can crash cloudcore vulnerability (CWE-476: NULL Pointer Dereference) affecting CloudCore UDS Server libraries in the Go ecosystem. The issue involves malicious message can crash cloudcore. Remediation is available by upgrading affected packages to version 1.10.1, 1.9.3.

CVE-2022-31076 at a Glance

CVE Identifier CVE-2022-31076
GHSA Identifier GHSA-8f4f-v9x5-cg6j
Severity MODERATE
CVSS v3.1 Base Score 4.2
CWE Classification CWE-476: NULL Pointer Dereference
Affected Product CloudCore UDS Server
Package Ecosystem Go
Published Date
Last Updated

Security Impact

CVSS: 4.2

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

Attack Vector Adjacent (AV:A)
Attack Complexity High (AC:H)
Privileges Required High (PR:H)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality None (C:N)
Integrity None (I:N)
Availability High (A:H)

How to Fix CVE-2022-31076

To remediate this vulnerability, upgrade all affected CloudCore UDS Server 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/kubeedge/kubeedge fixed: 1.10.1
Upgrade github.com/kubeedge/kubeedge to 1.10.1
github.com/kubeedge/kubeedge fixed: 1.9.3
Upgrade github.com/kubeedge/kubeedge to 1.9.3
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/kubeedge/kubeedge

How to Check if You Are Affected

To determine whether your application is affected by CVE-2022-31076, inspect your project dependencies for CloudCore UDS Server:

inspect dependencies for github.com/kubeedge/kubeedge

Analyze the terminal output to locate any version of CloudCore UDS Server in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.10.1), 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-476: NULL Pointer Dereference, where the product dereferences a pointer that it expects to be valid but is null. In CloudCore UDS Server, 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 A malicious message can crash CloudCore by triggering a null-pointer dereference in the UDS Server. Since the UDS Server only communicates with the CSI Driver on the cloud side, the attack is limited to the local host network. As such, an attacker would already need to be an authenticated user of the Cloud. It will be affected only when users turn on the unixsocket switch in the config file `cloudcore.yaml` as below: ``` modules: cloudHub: ... unixsocket: address: xxx enable: true ``` ### Patches This bug has been fixed in Kubeedge 1.11.0, 1.10.1, and 1.9.3. Users should update to these versions to resolve the issue. ### Workarounds Disable the unixsocket switch of CloudHub in the config file `cloudcore.yaml`. ### References NA ### Credits Thanks David Korczynski and Adam Korczynski of ADA Logics for responsibly disclosing this issue in accordance with the [kubeedge security policy](https://github.com/kubeedge/kubeedge/security/policy) during a security audit sponsored by CNCF and facilitated by OSTIF. ### For more information If you have any questions or comments about this advisory: * Open an issue in [KubeEdge repo](https://github.com/kubeedge/kubeedge/issues/new/choose) * To make a vulnerability report, email your vulnerability to the private [cncf-kubeedge-security@lists.cncf.io](mailto:cncf-kubeedge-security@lists.cncf.io) list with the security details and the details expected for [KubeEdge bug reports](https://github.com/kubeedge/kubeedge/blob/master/.github/ISSUE_TEMPLATE/bug-report.md). **Notes:** This vulnerability was found by fuzzing KubeEdge by way of OSS-Fuzz.

CVE-2022-31076 Affected CloudCore UDS Server Versions

2 component(s)
Fixed Versions:
1.10.11.9.3
Product / Package Ecosystem Affected Versions Fixed Version
github.com/kubeedge/kubeedge
Go
≥ 1.10.0
< 1.10.1
All 1 versions
1.10.0
1.10.1
github.com/kubeedge/kubeedge
Go
< 1.9.3
1.9.3

References

Frequently Asked Questions

What is CVE-2022-31076?
CVE-2022-31076 is a security vulnerability in CloudCore UDS Server involving Malicious Message can crash CloudCore under CWE-476: NULL Pointer Dereference.
Which CloudCore UDS Server versions are affected?
Affected versions include releases prior to 1.10.1, 1.9.3 across affected packages: github.com/kubeedge/kubeedge.
What version fixes CVE-2022-31076?
Upgrading to 1.10.1, 1.9.3 (or the latest patched release for your respective branch) resolves the vulnerability.
Is github.com/kubeedge/kubeedge affected?
Yes, github.com/kubeedge/kubeedge is affected in releases prior to 1.10.1, 1.9.3. Upgrade your dependency to 1.10.1, 1.9.3 or later.
What is the CVSS score of CVE-2022-31076?
CVE-2022-31076 has a CVSS v3.1 base score of 4.2 (MODERATE) with vector string CVSS:3.1/AV:A/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H.
What CWE is associated with CVE-2022-31076?
CVE-2022-31076 is classified under CWE-476: NULL Pointer Dereference (The product dereferences a pointer that it expects to be valid but is NULL.).
How can I check Go dependencies for CVE-2022-31076?
Run the dependency tree command: 'inspect dependencies for github.com/kubeedge/kubeedge'. 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-8f4f-v9x5-cg6j",
  "modified" : "2022-06-25T07:19:34Z",
  "published" : "2022-06-25T07:19:34Z",
  "aliases" : [ "CVE-2022-31076" ],
  "summary" : "CloudCore UDS Server: Malicious Message can crash CloudCore",
  "details" : "### Impact\nA malicious message can crash CloudCore by triggering a null-pointer dereference in the UDS Server. Since the UDS Server only communicates with the CSI Driver on the cloud side, the attack is limited to the local host network. As such, an attacker would already need to be an authenticated user of the Cloud.\n \nIt will be affected only when users turn on the unixsocket switch in the config file `cloudcore.yaml` as below:\n```\nmodules:\n  cloudHub:\n    ...\n    unixsocket:\n      address: xxx\n      enable: true\n```\n\n### Patches\nThis bug has been fixed in Kubeedge 1.11.0, 1.10.1, and 1.9.3. Users should update to these versions to resolve the issue.\n\n### Workarounds\nDisable the unixsocket switch of CloudHub in the config file `cloudcore.yaml`.\n\n### References\nNA\n\n### Credits\nThanks David Korczynski and Adam Korczynski of ADA Logics for responsibly disclosing this issue in accordance with the [kubeedge security policy](https://github.com/kubeedge/kubeedge/security/policy) during a security audit sponsored by CNCF and facilitated by OSTIF.\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Open an issue in [KubeEdge repo](https://github.com/kubeedge/kubeedge/issues/new/choose)\n* To make a vulnerability report, email your vulnerability to the private [cncf-kubeedge-security@lists.cncf.io](mailto:cncf-kubeedge-security@lists.cncf.io) list with the security details and the details expected for [KubeEdge bug reports](https://github.com/kubeedge/kubeedge/blob/master/.github/ISSUE_TEMPLATE/bug-report.md).\n\n**Notes:** This vulnerability was found by fuzzing KubeEdge by way of OSS-Fuzz.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:A/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/kubeedge/kubeedge"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "1.10.0"
      }, {
        "fixed" : "1.10.1"
      } ]
    } ],
    "versions" : [ "1.10.0" ]
  }, {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/kubeedge/kubeedge"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.9.3"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/kubeedge/kubeedge/security/advisories/GHSA-8f4f-v9x5-cg6j"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2022-31076"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/kubeedge/kubeedge/pull/3899/commits/5d60ae9eabd6b6b7afe38758e19bbe8137664701"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/kubeedge/kubeedge"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-476" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2022-06-25T07:19:34Z",
    "nvd_published_at" : "2022-06-27T20:15:00Z"
  }
}