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GSD-2023-3776

Vulnerability from gsd - Updated: 2023-12-13 01:20
Details
A use-after-free vulnerability in the Linux kernel's net/sched: cls_fw component can be exploited to achieve local privilege escalation. If tcf_change_indev() fails, fw_set_parms() will immediately return an error after incrementing or decrementing the reference counter in tcf_bind_filter(). If an attacker can control the reference counter and set it to zero, they can cause the reference to be freed, leading to a use-after-free vulnerability. We recommend upgrading past commit 0323bce598eea038714f941ce2b22541c46d488f.
Aliases
Aliases

{
  "GSD": {
    "alias": "CVE-2023-3776",
    "id": "GSD-2023-3776"
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2023-3776"
      ],
      "details": "A use-after-free vulnerability in the Linux kernel\u0027s net/sched: cls_fw component can be exploited to achieve local privilege escalation.\n\nIf tcf_change_indev() fails, fw_set_parms() will immediately return an error after incrementing or decrementing the reference counter in tcf_bind_filter(). If an attacker can control the reference counter and set it to zero, they can cause the reference to be freed, leading to a use-after-free vulnerability.\n\nWe recommend upgrading past commit 0323bce598eea038714f941ce2b22541c46d488f.\n\n",
      "id": "GSD-2023-3776",
      "modified": "2023-12-13T01:20:54.283901Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
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        "ID": "CVE-2023-3776",
        "STATE": "PUBLIC"
      },
      "affects": {
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          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "Kernel",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "\u003c",
                          "version_name": "2.6",
                          "version_value": "6.5"
                        }
                      ]
                    }
                  }
                ]
              },
              "vendor_name": "Linux"
            }
          ]
        }
      },
      "credits": [
        {
          "lang": "en",
          "value": "Muhammad Alifa Ramdhan of STAR Labs SG"
        }
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      "data_type": "CVE",
      "data_version": "4.0",
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            "lang": "eng",
            "value": "A use-after-free vulnerability in the Linux kernel\u0027s net/sched: cls_fw component can be exploited to achieve local privilege escalation.\n\nIf tcf_change_indev() fails, fw_set_parms() will immediately return an error after incrementing or decrementing the reference counter in tcf_bind_filter(). If an attacker can control the reference counter and set it to zero, they can cause the reference to be freed, leading to a use-after-free vulnerability.\n\nWe recommend upgrading past commit 0323bce598eea038714f941ce2b22541c46d488f.\n\n"
          }
        ]
      },
      "generator": {
        "engine": "Vulnogram 0.1.0-dev"
      },
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            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
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            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          }
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      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "cweId": "CWE-416",
                "lang": "eng",
                "value": "CWE-416 Use After Free"
              }
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          },
          {
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          },
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            "url": "https://lists.debian.org/debian-lts-announce/2024/01/msg00004.html"
          },
          {
            "name": "https://security.netapp.com/advisory/ntap-20240202-0003/",
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            "url": "https://security.netapp.com/advisory/ntap-20240202-0003/"
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        ]
      },
      "source": {
        "discovery": "EXTERNAL"
      }
    },
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      "cve": {
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                    "matchCriteriaId": "6CC235BB-2BE9-4F58-993C-D5A1C422818E",
                    "versionEndExcluding": "6.5",
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            "lang": "en",
            "value": "A use-after-free vulnerability in the Linux kernel\u0027s net/sched: cls_fw component can be exploited to achieve local privilege escalation.\n\nIf tcf_change_indev() fails, fw_set_parms() will immediately return an error after incrementing or decrementing the reference counter in tcf_bind_filter(). If an attacker can control the reference counter and set it to zero, they can cause the reference to be freed, leading to a use-after-free vulnerability.\n\nWe recommend upgrading past commit 0323bce598eea038714f941ce2b22541c46d488f.\n\n"
          }
        ],
        "id": "CVE-2023-3776",
        "lastModified": "2024-02-02T14:15:53.723",
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              "cvssData": {
                "attackComplexity": "LOW",
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        "vulnStatus": "Modified",
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            "type": "Secondary"
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      }
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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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.
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  • 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.

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