Vulnerability-Lookup

GHSA-JQ2W-P8GP-86FV

Vulnerability from github – Published: 2022-09-02 00:01 – Updated: 2026-10-14 15:31

Details

An issue was found in the Linux kernel in nf_conntrack_irc where the message handling can be confused and incorrectly matches the message. A firewall may be able to be bypassed when users are using unencrypted IRC with nf_conntrack_irc configured.

Severity

5.3 (Medium)


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

Show details on source website

JSON

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{
  "affected": [],
  "aliases": [
    "CVE-2022-2663"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-923"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2022-09-01T21:15:00Z",
    "severity": "MODERATE"
  },
  "details": "An issue was found in the Linux kernel in nf_conntrack_irc where the message handling can be confused and incorrectly matches the message. A firewall may be able to be bypassed when users are using unencrypted IRC with nf_conntrack_irc configured.",
  "id": "GHSA-jq2w-p8gp-86fv",
  "modified": "2026-10-14T15:31:15Z",
  "published": "2022-09-02T00:01:01Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-2663"
    },
    {
      "type": "WEB",
      "url": "https://cert-portal.siemens.com/productcert/html/ssa-769027.html"
    },
    {
      "type": "WEB",
      "url": "https://cert-portal.siemens.com/productcert/html/ssa-794697.html"
    },
    {
      "type": "WEB",
      "url": "https://dgl.cx/2022/08/nat-again-irc-cve-2022-2663"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2022/10/msg00000.html"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2022/11/msg00001.html"
    },
    {
      "type": "WEB",
      "url": "https://lore.kernel.org/netfilter-devel/20220826045658.100360-1-dgl%40dgl.cx/T"
    },
    {
      "type": "WEB",
      "url": "https://lore.kernel.org/netfilter-devel/20220826045658.100360-1-dgl@dgl.cx/T"
    },
    {
      "type": "WEB",
      "url": "https://www.debian.org/security/2022/dsa-5257"
    },
    {
      "type": "WEB",
      "url": "https://www.openwall.com/lists/oss-security/2022/08/30/1"
    },
    {
      "type": "WEB",
      "url": "https://www.youtube.com/watch?v=WIq-YgQuYCA"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2022-2663 (GCVE-0-2022-2663)

Vulnerability from cvelistv5 – Published: 2022-09-01 00:00 – Updated: 2026-10-14 13:29

Summary

Severity

No CVSS data available.

CWE

CWE-923

Assigner

redhat CNA under the redhat root

CNA scorecard B 82/100 over 1025 records in the last 180 days details

References

9 references

URL	Tags
https://www.openwall.com/lists/oss-security/2022/…
https://lore.kernel.org/netfilter-devel/202208260…
https://lists.debian.org/debian-lts-announce/2022…	mailing-list
https://dgl.cx/2022/08/nat-again-irc-cve-2022-2663
https://www.youtube.com/watch?v=WIq-YgQuYCA
https://www.debian.org/security/2022/dsa-5257	vendor-advisory
https://lists.debian.org/debian-lts-announce/2022…	mailing-list
https://cert-portal.siemens.com/productcert/html/…
https://cert-portal.siemens.com/productcert/html/…

Impacted products

2 products

Vendor	Product	Version
n/a	Linux kernel	Affected: unknown
Siemens	SIMATIC S7-1500 TM MFP - GNU/Linux subsystem	Affected: 0 , < V1.1 (custom)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T00:46:04.030Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://www.openwall.com/lists/oss-security/2022/08/30/1"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://lore.kernel.org/netfilter-devel/20220826045658.100360-1-dgl%40dgl.cx/T/"
          },
          {
            "name": "[debian-lts-announce] 20221002 [SECURITY] [DLA 3131-1] linux security update",
            "tags": [
              "mailing-list",
              "x_transferred"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2022/10/msg00000.html"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://dgl.cx/2022/08/nat-again-irc-cve-2022-2663"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://www.youtube.com/watch?v=WIq-YgQuYCA"
          },
          {
            "name": "DSA-5257",
            "tags": [
              "vendor-advisory",
              "x_transferred"
            ],
            "url": "https://www.debian.org/security/2022/dsa-5257"
          },
          {
            "name": "[debian-lts-announce] 20221101 [SECURITY] [DLA 3173-1] linux-5.10 security update",
            "tags": [
              "mailing-list",
              "x_transferred"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2022/11/msg00001.html"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "affected": [
          {
            "defaultStatus": "unknown",
            "product": "SIMATIC S7-1500 TM MFP - GNU/Linux subsystem",
            "vendor": "Siemens",
            "versions": [
              {
                "lessThan": "V1.1",
                "status": "affected",
                "version": "0",
                "versionType": "custom"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-10-14T13:29:18.560Z",
          "orgId": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e",
          "shortName": "siemens-SADP"
        },
        "references": [
          {
            "url": "https://cert-portal.siemens.com/productcert/html/ssa-794697.html"
          },
          {
            "url": "https://cert-portal.siemens.com/productcert/html/ssa-769027.html"
          }
        ],
        "x_adpType": "supplier"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "Linux kernel",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "unknown"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "An issue was found in the Linux kernel in nf_conntrack_irc where the message handling can be confused and incorrectly matches the message. A firewall may be able to be bypassed when users are using unencrypted IRC with nf_conntrack_irc configured."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-923",
              "description": "CWE-923",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2022-11-01T00:00:00.000Z",
        "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
        "shortName": "redhat"
      },
      "references": [
        {
          "url": "https://www.openwall.com/lists/oss-security/2022/08/30/1"
        },
        {
          "url": "https://lore.kernel.org/netfilter-devel/20220826045658.100360-1-dgl%40dgl.cx/T/"
        },
        {
          "name": "[debian-lts-announce] 20221002 [SECURITY] [DLA 3131-1] linux security update",
          "tags": [
            "mailing-list"
          ],
          "url": "https://lists.debian.org/debian-lts-announce/2022/10/msg00000.html"
        },
        {
          "url": "https://dgl.cx/2022/08/nat-again-irc-cve-2022-2663"
        },
        {
          "url": "https://www.youtube.com/watch?v=WIq-YgQuYCA"
        },
        {
          "name": "DSA-5257",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://www.debian.org/security/2022/dsa-5257"
        },
        {
          "name": "[debian-lts-announce] 20221101 [SECURITY] [DLA 3173-1] linux-5.10 security update",
          "tags": [
            "mailing-list"
          ],
          "url": "https://lists.debian.org/debian-lts-announce/2022/11/msg00001.html"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
    "assignerShortName": "redhat",
    "cveId": "CVE-2022-2663",
    "datePublished": "2022-09-01T00:00:00.000Z",
    "dateReserved": "2022-08-04T00:00:00.000Z",
    "dateUpdated": "2026-10-14T13:29:18.560Z",
    "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.

Vulnerability timeline

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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.

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