CVE-2024-34486: Ryu Ryu Infinite Loop Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-fgpw-cx3v-wj95
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CVSS 7.5
CWE-606
Published
Advisory Summary

CVE-2024-34486 is a HIGH (CVSS 7.5) ryu infinite loop vulnerability vulnerability (CWE-606: Unchecked Input for Loop Condition) affecting Ryu libraries in the PyPI ecosystem. The issue involves ryu infinite loop vulnerability. Remediation is available in the latest vendor maintenance releases.

CVE-2024-34486 at a Glance

CVE Identifier CVE-2024-34486
GHSA Identifier GHSA-fgpw-cx3v-wj95
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification CWE-606: Unchecked Input for Loop Condition
Affected Product Ryu
Package Ecosystem PyPI
Published Date
Last Updated

Security Impact

CVSS: 7.5

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

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
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-2024-34486

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

ryu fixed: Latest secure release 
pip install ryu>=Latest secure release
Verify Direct and Transitive Dependencies

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

pip show ryu

How to Check if You Are Affected

To determine whether your Python environment is affected by CVE-2024-34486, inspect your installed packages using pip:

pip show ryu

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

Note: The pip show ryu command checks currently installed packages in your active Python environment.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-606: Unchecked Input for Loop Condition, where the product does not properly check inputs that are used for loop conditions, potentially leading to a denial of service or other consequences because of excessive looping. In Ryu, 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

`OFPPacketQueue` in parser.py in Faucet SDN Ryu 4.34 allows attackers to cause a denial of service (infinite loop) via `OFPQueueProp.len=0`.

CVE-2024-34486 Affected Ryu Versions

1 component(s)
Product / Package Ecosystem Affected Versions Fixed Version
ryu
pypi/ryu
PyPI
≤ 4.34

References

NVD — CVE-2024-34486 NVD
https://nvd.nist.gov/vuln/detail/CVE-2024-34486
Ryu Source Repository REPOSITORY
https://github.com/faucetsdn/ryu/issues/190
Ryu Source Repository REPOSITORY
https://github.com/faucetsdn/ryu

Frequently Asked Questions

What is CVE-2024-34486?
CVE-2024-34486 is a security vulnerability in Ryu involving Ryu Infinite Loop vulnerability under CWE-606: Unchecked Input for Loop Condition.
Which Ryu versions are affected?
Affected versions include releases prior to current release patches across affected packages: ryu.
What version fixes CVE-2024-34486?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
Is ryu affected?
Yes, ryu is affected in releases prior to Latest secure release. Upgrade your dependency to Latest secure release or later.
What is the CVSS score of CVE-2024-34486?
CVE-2024-34486 has a CVSS v3.1 base score of 7.5 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
What CWE is associated with CVE-2024-34486?
CVE-2024-34486 is classified under CWE-606: Unchecked Input for Loop Condition (The product does not properly check inputs that are used for loop conditions, potentially leading to a denial of service or other consequences because of excessive looping.).
How can I check PyPI dependencies for CVE-2024-34486?
Run the dependency tree command: 'pip show ryu'. 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
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-fgpw-cx3v-wj95",
  "modified" : "2024-08-02T15:47:48Z",
  "published" : "2024-05-05T03:30:47Z",
  "aliases" : [ "CVE-2024-34486" ],
  "summary" : "Ryu Infinite Loop vulnerability",
  "details" : "`OFPPacketQueue` in parser.py in Faucet SDN Ryu 4.34 allows attackers to cause a denial of service (infinite loop) via `OFPQueueProp.len=0`.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "ryu"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "4.34"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2024-34486"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/faucetsdn/ryu/issues/190"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/faucetsdn/ryu"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-606" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-05-06T14:32:35Z",
    "nvd_published_at" : "2024-05-05T03:15:07Z"
  }
}