Vulnerability-Lookup

VAR-202301-0652

Vulnerability from variot - Updated: 2025-02-09 22:47

A null pointer dereference vulnerability exists in Linksys WRT54GL Wireless-G Broadband Router with firmware <= 4.30.18.006. A null pointer dereference in the soap_action function within the upnp binary can be triggered by an unauthenticated attacker via a malicious POST request invoking the AddPortMapping action. Linksys WRT54GL is a wireless router from Linksys, an American company. Attackers can exploit this vulnerability to cause a denial of service attack

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CVE-2022-43972 (GCVE-0-2022-43972)

Vulnerability from cvelistv5 – Published: 2023-01-09 00:00 – Updated: 2025-04-09 14:22

Title

Null pointer dereference in Linksys WRT54GL

Summary

Severity

6.5 (Medium)


                        
                          CVSS:3.1/AV:A/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 2025-04-09 14:21 UTC

CWE

CWE-476 - NULL Pointer Dereference

Assigner

trellix mitre root Scorecard

References

3 references

URL	Tags
https://youtu.be/73-1lhvJPNg
https://youtu.be/TeWAmZaKQ_w
https://youtu.be/RfWVYCUBNZ0

Impacted products

1 product

Vendor	Product	Version
Linksys	WRT54GL Wireless-G Broadband Router	Affected: Firmware , ≤ 4.30.18.006 (custom)

Credits

Jessie Chick of Trellix ARC

Show details on NVD website

JSON

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        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "WRT54GL Wireless-G Broadband Router",
          "vendor": "Linksys",
          "versions": [
            {
              "lessThanOrEqual": "4.30.18.006",
              "status": "affected",
              "version": "Firmware",
              "versionType": "custom"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "Jessie Chick of Trellix ARC"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A null pointer dereference vulnerability exists in Linksys WRT54GL Wireless-G Broadband Router with firmware \u003c= 4.30.18.006. A null pointer dereference in the soap_action function within the upnp binary can be triggered by an unauthenticated attacker via a malicious POST request invoking the AddPortMapping action."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "ADJACENT_NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-476",
              "description": "CWE-476: NULL Pointer Dereference",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2023-01-09T00:00:00.000Z",
        "orgId": "01626437-bf8f-4d1c-912a-893b5eb04808",
        "shortName": "trellix"
      },
      "references": [
        {
          "url": "https://youtu.be/73-1lhvJPNg"
        },
        {
          "url": "https://youtu.be/TeWAmZaKQ_w"
        },
        {
          "url": "https://youtu.be/RfWVYCUBNZ0"
        }
      ],
      "source": {
        "discovery": "EXTERNAL"
      },
      "title": "Null pointer dereference in Linksys WRT54GL",
      "x_generator": {
        "engine": "Vulnogram 0.0.9"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "01626437-bf8f-4d1c-912a-893b5eb04808",
    "assignerShortName": "trellix",
    "cveId": "CVE-2022-43972",
    "datePublished": "2023-01-09T00:00:00.000Z",
    "dateReserved": "2022-10-28T00:00:00.000Z",
    "dateUpdated": "2025-04-09T14:22:24.605Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

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Action not permitted

VAR-202301-0652

CVE-2022-43972 (GCVE-0-2022-43972)

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Sightings

Nomenclature

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