Vulnerability-Lookup

SUSE-SU-2024:1428-1

Vulnerability from csaf_suse - Published: 2024-04-24 09:10 - Updated: 2026-09-20 15:47

Summary

Security update for python-idna

Severity

Moderate

Notes

Title of the patch: Security update for python-idna

Description of the patch: This update for python-idna fixes the following issues: - CVE-2024-3651: Fixed potential DoS via resource consumption via specially crafted inputs to idna.encode() (bsc#1222842).

Patchnames: SUSE-2024-1428,SUSE-SLE-Module-Public-Cloud-12-2024-1428,SUSE-SLE-SERVER-12-SP5-2024-1428

CVE-2024-3651

6.5 (Medium)


                
                  CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected products

Recommended 26 products

Product	Version	Remediation
Unresolved product id: SUSE Linux Enterprise High Performance Computing 12 SP5:python-idna-0:2.5-3.13.1.noarch	—	Vendor Fix
Unresolved product id: SUSE Linux Enterprise High Performance Computing 12 SP5:python3-idna-0:2.5-3.13.1.noarch	—	Vendor Fix
Unresolved product id: SUSE Linux Enterprise High Performance Computing 12:python-idna-0:2.5-3.13.1.noarch	—	Vendor Fix
Unresolved product id: SUSE Linux Enterprise High Performance Computing 12:python3-idna-0:2.5-3.13.1.noarch	—	Vendor Fix
Unresolved product id: SUSE Linux Enterprise Module for Public Cloud 12:python-idna-0:2.5-3.13.1.noarch	—	Vendor Fix
Unresolved product id: SUSE Linux Enterprise Module for Public Cloud 12:python3-idna-0:2.5-3.13.1.noarch	—	Vendor Fix
Unresolved product id: SUSE Linux Enterprise Server 12 SP3:python-idna-0:2.5-3.13.1.noarch	—	Vendor Fix
Unresolved product id: SUSE Linux Enterprise Server 12 SP3:python3-idna-0:2.5-3.13.1.noarch	—	Vendor Fix
Unresolved product id: SUSE Linux Enterprise Server 12 SP4:python-idna-0:2.5-3.13.1.noarch	—	Vendor Fix
Unresolved product id: SUSE Linux Enterprise Server 12 SP4:python3-idna-0:2.5-3.13.1.noarch	—	Vendor Fix
Unresolved product id: SUSE Linux Enterprise Server 12 SP5-LTSS:python-idna-0:2.5-3.13.1.noarch	—	Vendor Fix
Unresolved product id: SUSE Linux Enterprise Server 12 SP5-LTSS:python3-idna-0:2.5-3.13.1.noarch	—	Vendor Fix
Unresolved product id: SUSE Linux Enterprise Server 12 SP5:python-idna-0:2.5-3.13.1.noarch	—	Vendor Fix
Unresolved product id: SUSE Linux Enterprise Server 12 SP5:python3-idna-0:2.5-3.13.1.noarch	—	Vendor Fix
Unresolved product id: SUSE Linux Enterprise Server 12:python-idna-0:2.5-3.13.1.noarch	—	Vendor Fix
Unresolved product id: SUSE Linux Enterprise Server 12:python3-idna-0:2.5-3.13.1.noarch	—	Vendor Fix
Unresolved product id: SUSE Linux Enterprise Server LTSS Extended Security 12 SP5:python-idna-0:2.5-3.13.1.noarch	—	Vendor Fix
Unresolved product id: SUSE Linux Enterprise Server LTSS Extended Security 12 SP5:python3-idna-0:2.5-3.13.1.noarch	—	Vendor Fix
Unresolved product id: SUSE Linux Enterprise Server for SAP Applications 12 SP3:python-idna-0:2.5-3.13.1.noarch	—	Vendor Fix
Unresolved product id: SUSE Linux Enterprise Server for SAP Applications 12 SP3:python3-idna-0:2.5-3.13.1.noarch	—	Vendor Fix
Unresolved product id: SUSE Linux Enterprise Server for SAP Applications 12 SP4:python-idna-0:2.5-3.13.1.noarch	—	Vendor Fix
Unresolved product id: SUSE Linux Enterprise Server for SAP Applications 12 SP4:python3-idna-0:2.5-3.13.1.noarch	—	Vendor Fix
Unresolved product id: SUSE Linux Enterprise Server for SAP Applications 12 SP5:python-idna-0:2.5-3.13.1.noarch	—	Vendor Fix
Unresolved product id: SUSE Linux Enterprise Server for SAP Applications 12 SP5:python3-idna-0:2.5-3.13.1.noarch	—	Vendor Fix
Unresolved product id: SUSE Linux Enterprise Server for SAP Applications 12:python-idna-0:2.5-3.13.1.noarch	—	Vendor Fix
Unresolved product id: SUSE Linux Enterprise Server for SAP Applications 12:python3-idna-0:2.5-3.13.1.noarch	—	Vendor Fix

Threats

Impact moderate

References

9 references

URL	Category
https://www.suse.com/support/security/rating/	external
https://ftp.suse.com/pub/projects/security/csaf/s…	self
https://www.suse.com/support/update/announcement/…	self
https://lists.suse.com/pipermail/sle-updates/2024…	self
https://bugzilla.suse.com/1222842	self
https://www.suse.com/security/cve/CVE-2024-3651/	self
https://www.suse.com/security/cve/CVE-2024-3651	external
https://bugzilla.suse.com/1222842	external
https://bugzilla.suse.com/1265413	external

JSON

To clipboard

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        "product_reference": "python3-idna-0:2.5-3.13.1.noarch",
        "relates_to_product_reference": "SUSE Linux Enterprise Server 12 SP5-LTSS"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "python-idna-0:2.5-3.13.1.noarch as component of SUSE Linux Enterprise Module for Public Cloud 12",
          "product_id": "SUSE Linux Enterprise Server LTSS Extended Security 12 SP5:python-idna-0:2.5-3.13.1.noarch"
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        "product_reference": "python-idna-0:2.5-3.13.1.noarch",
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      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "python3-idna-0:2.5-3.13.1.noarch as component of SUSE Linux Enterprise Module for Public Cloud 12",
          "product_id": "SUSE Linux Enterprise Server LTSS Extended Security 12 SP5:python3-idna-0:2.5-3.13.1.noarch"
        },
        "product_reference": "python3-idna-0:2.5-3.13.1.noarch",
        "relates_to_product_reference": "SUSE Linux Enterprise Server LTSS Extended Security 12 SP5"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "python-idna-0:2.5-3.13.1.noarch as component of SUSE Linux Enterprise Server 12 SP5",
          "product_id": "SUSE Linux Enterprise High Performance Computing 12 SP5:python-idna-0:2.5-3.13.1.noarch"
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        "product_reference": "python-idna-0:2.5-3.13.1.noarch",
        "relates_to_product_reference": "SUSE Linux Enterprise High Performance Computing 12 SP5"
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        "category": "default_component_of",
        "full_product_name": {
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        "product_reference": "python3-idna-0:2.5-3.13.1.noarch",
        "relates_to_product_reference": "SUSE Linux Enterprise High Performance Computing 12 SP5"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2024-3651",
      "ids": [
        {
          "system_name": "SUSE CVE Page",
          "text": "https://www.suse.com/security/cve/CVE-2024-3651"
        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "A vulnerability was identified in the kjd/idna library, specifically within the `idna.encode()` function, affecting version 3.6. The issue arises from the function\u0027s handling of crafted input strings, which can lead to quadratic complexity and consequently, a denial of service condition. This vulnerability is triggered by a crafted input that causes the `idna.encode()` function to process the input with considerable computational load, significantly increasing the processing time in a quadratic manner relative to the input size.",
          "title": "CVE description"
        }
      ],
      "product_status": {
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          "SUSE Linux Enterprise Server LTSS Extended Security 12 SP5:python3-idna-0:2.5-3.13.1.noarch",
          "SUSE Linux Enterprise Server for SAP Applications 12 SP3:python-idna-0:2.5-3.13.1.noarch",
          "SUSE Linux Enterprise Server for SAP Applications 12 SP3:python3-idna-0:2.5-3.13.1.noarch",
          "SUSE Linux Enterprise Server for SAP Applications 12 SP4:python-idna-0:2.5-3.13.1.noarch",
          "SUSE Linux Enterprise Server for SAP Applications 12 SP4:python3-idna-0:2.5-3.13.1.noarch",
          "SUSE Linux Enterprise Server for SAP Applications 12 SP5:python-idna-0:2.5-3.13.1.noarch",
          "SUSE Linux Enterprise Server for SAP Applications 12 SP5:python3-idna-0:2.5-3.13.1.noarch",
          "SUSE Linux Enterprise Server for SAP Applications 12:python-idna-0:2.5-3.13.1.noarch",
          "SUSE Linux Enterprise Server for SAP Applications 12:python3-idna-0:2.5-3.13.1.noarch"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "CVE-2024-3651",
          "url": "https://www.suse.com/security/cve/CVE-2024-3651"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1222842 for CVE-2024-3651",
          "url": "https://bugzilla.suse.com/1222842"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1265413 for CVE-2024-3651",
          "url": "https://bugzilla.suse.com/1265413"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n",
          "product_ids": [
            "SUSE Linux Enterprise High Performance Computing 12 SP5:python-idna-0:2.5-3.13.1.noarch",
            "SUSE Linux Enterprise High Performance Computing 12 SP5:python3-idna-0:2.5-3.13.1.noarch",
            "SUSE Linux Enterprise High Performance Computing 12:python-idna-0:2.5-3.13.1.noarch",
            "SUSE Linux Enterprise High Performance Computing 12:python3-idna-0:2.5-3.13.1.noarch",
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            "SUSE Linux Enterprise Server for SAP Applications 12:python3-idna-0:2.5-3.13.1.noarch"
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      "scores": [
        {
          "cvss_v3": {
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
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          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "date": "2024-04-24T09:10:46Z",
          "details": "moderate"
        }
      ],
      "title": "CVE-2024-3651"
    }
  ]
}

CVE-2024-3651 (GCVE-0-2024-3651)

Vulnerability from cvelistv5 – Published: 2024-07-07 17:22 – Updated: 2025-11-04 22:06

Title

Denial of Service via Quadratic Complexity in kjd/idna

Summary

A vulnerability was identified in the kjd/idna library, specifically within the `idna.encode()` function, affecting version 3.6. The issue arises from the function's handling of crafted input strings, which can lead to quadratic complexity and consequently, a denial of service condition. This vulnerability is triggered by a crafted input that causes the `idna.encode()` function to process the input with considerable computational load, significantly increasing the processing time in a quadratic manner relative to the input size.

Severity

6.2 (Medium)


                        
                          CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-07-07 19:07 UTC

CWE

CWE-1333 - Inefficient Regular Expression Complexity

Assigner

@huntr_ai CNA under the mitre root

CNA scorecard C 65/100 over 42 records in the last 180 days details

References

7 references

URL	Tags
https://huntr.com/bounties/93d78d07-d791-4b39-a84…
https://github.com/kjd/idna/commit/1d365e17e10d72…
https://lists.debian.org/debian-lts-announce/2024…
https://lists.fedoraproject.org/archives/list/pac…
https://lists.fedoraproject.org/archives/list/pac…
https://lists.fedoraproject.org/archives/list/pac…
https://lists.fedoraproject.org/archives/list/pac…

Impacted products

1 product

Vendor	Product	Version
kjd	kjd/idna	Affected: unspecified , < 3.7 (custom)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2024-3651",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-07-07T19:07:43.737156Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-07-07T19:07:50.996Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2025-11-04T22:06:20.751Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://huntr.com/bounties/93d78d07-d791-4b39-a845-cbfabc44aadb"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://github.com/kjd/idna/commit/1d365e17e10d72d0b7876316fc7b9ca0eebdd38d"
          },
          {
            "url": "https://lists.debian.org/debian-lts-announce/2024/05/msg00006.html"
          },
          {
            "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/F2S5E23N6E52S46KGNYTDFB75LOC4N4D/"
          },
          {
            "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/S5IDLLD2IKSIVRBSLB34WTSYGLMWUFWF/"
          },
          {
            "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ULSC7HBJKXB3BZV367WM5BR6DFEC4Z43/"
          },
          {
            "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4YQUPYH3SVZ5GFF2CDQ55FCM575AZTF2/"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "kjd/idna",
          "vendor": "kjd",
          "versions": [
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              "lessThan": "3.7",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
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        }
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      "descriptions": [
        {
          "lang": "en",
          "value": "A vulnerability was identified in the kjd/idna library, specifically within the `idna.encode()` function, affecting version 3.6. The issue arises from the function\u0027s handling of crafted input strings, which can lead to quadratic complexity and consequently, a denial of service condition. This vulnerability is triggered by a crafted input that causes the `idna.encode()` function to process the input with considerable computational load, significantly increasing the processing time in a quadratic manner relative to the input size."
        }
      ],
      "metrics": [
        {
          "cvssV3_0": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 6.2,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.0"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-1333",
              "description": "CWE-1333 Inefficient Regular Expression Complexity",
              "lang": "en",
              "type": "CWE"
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      "providerMetadata": {
        "dateUpdated": "2025-10-15T12:49:38.011Z",
        "orgId": "c09c270a-b464-47c1-9133-acb35b22c19a",
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      "source": {
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        "discovery": "EXTERNAL"
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      "title": "Denial of Service via Quadratic Complexity in kjd/idna"
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  "cveMetadata": {
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    "dateReserved": "2024-04-10T23:50:44.569Z",
    "dateUpdated": "2025-11-04T22:06:20.751Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

SUSE-SU-2024:1428-1

CVE-2024-3651 (GCVE-0-2024-3651)

Tags

Sightings

Nomenclature

Related by attack behaviour