github - ghsa-38f7-vv5r-859m

ghsa-38f7-vv5r-859m

Vulnerability from github

Published

2023-07-26 03:30

Modified

2024-04-04 06:21

Severity ?

7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Details

On Ubuntu kernels carrying both c914c0e27eb0 and "UBUNTU: SAUCE: overlayfs: Skip permission checking for trusted.overlayfs.* xattrs", an unprivileged user may set privileged extended attributes on the mounted files, leading them to be set on the upper files without the appropriate security checks.

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JSON

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{
  "affected": [],
  "aliases": [
    "CVE-2023-2640"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-863"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2023-07-26T02:15:09Z",
    "severity": "HIGH"
  },
  "details": "On Ubuntu kernels carrying both c914c0e27eb0 and \"UBUNTU: SAUCE: overlayfs: Skip permission checking for trusted.overlayfs.* xattrs\", an unprivileged user may set privileged extended attributes on the mounted files, leading them to be set on the upper files without the appropriate security checks.",
  "id": "GHSA-38f7-vv5r-859m",
  "modified": "2024-04-04T06:21:33Z",
  "published": "2023-07-26T03:30:58Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-2640"
    },
    {
      "type": "WEB",
      "url": "https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-2640"
    },
    {
      "type": "WEB",
      "url": "https://lists.ubuntu.com/archives/kernel-team/2023-July/140923.html"
    },
    {
      "type": "WEB",
      "url": "https://ubuntu.com/security/notices/USN-6250-1"
    },
    {
      "type": "WEB",
      "url": "https://wiz.io/blog/ubuntu-overlayfs-vulnerability"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

cve-2023-2640

Vulnerability from cvelistv5

Published

2023-07-26 01:59

Modified

2024-10-23 14:59

Severity ?

7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Summary

References

▼	URL	Tags
	https://ubuntu.com/security/notices/USN-6250-1	vendor-advisory
	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-2640	issue-tracking
	https://wiz.io/blog/ubuntu-overlayfs-vulnerability	technical-description
	https://lists.ubuntu.com/archives/kernel-team/2023-July/140923.html	mailing-list

Impacted products

	Vendor	Product	Version
	Canonical	Ubuntu Kernel

Show details on NVD website

JSON

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{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-02T06:26:09.894Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "vendor-advisory",
              "x_transferred"
            ],
            "url": "https://ubuntu.com/security/notices/USN-6250-1"
          },
          {
            "tags": [
              "issue-tracking",
              "x_transferred"
            ],
            "url": "https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-2640"
          },
          {
            "tags": [
              "technical-description",
              "x_transferred"
            ],
            "url": "https://wiz.io/blog/ubuntu-overlayfs-vulnerability"
          },
          {
            "tags": [
              "mailing-list",
              "x_transferred"
            ],
            "url": "https://lists.ubuntu.com/archives/kernel-team/2023-July/140923.html"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "affected": [
          {
            "cpes": [
              "cpe:2.3:o:canonical:ubantu_kernel:*:*:*:*:*:*:*:*"
            ],
            "defaultStatus": "unknown",
            "product": "ubantu_kernel",
            "vendor": "canonical",
            "versions": [
              {
                "lessThan": "6.2.0-26.26",
                "status": "affected",
                "version": "0",
                "versionType": "semver"
              },
              {
                "lessThan": "6.0.0-1020.20",
                "status": "affected",
                "version": "0",
                "versionType": "semver"
              },
              {
                "lessThan": "5.4.0-155.172",
                "status": "affected",
                "version": "0",
                "versionType": "semver"
              }
            ]
          }
        ],
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2023-2640",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-10-23T14:57:20.015297Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-10-23T14:59:17.779Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "packageName": "Linux",
          "platforms": [
            "Linux"
          ],
          "product": "Ubuntu Kernel",
          "vendor": "Canonical",
          "versions": [
            {
              "lessThan": "6.2.0-26.26",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThan": "6.0.0-1020.20",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThan": "5.4.0-155.172",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Stonejiajia"
        },
        {
          "lang": "en",
          "type": "finder",
          "value": "Shir Tamari"
        },
        {
          "lang": "en",
          "type": "finder",
          "value": "Sagi Tzadik"
        }
      ],
      "datePublic": "2023-06-06T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "On Ubuntu kernels carrying both c914c0e27eb0 and \"UBUNTU: SAUCE: overlayfs: Skip permission checking for trusted.overlayfs.* xattrs\", an unprivileged user may set privileged extended attributes on the mounted files, leading them to be set on the upper files without the appropriate security checks."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "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"
          },
          "format": "CVSS"
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-863",
              "description": "CWE-863",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2023-07-26T01:59:23.543Z",
        "orgId": "cc1ad9ee-3454-478d-9317-d3e869d708bc",
        "shortName": "canonical"
      },
      "references": [
        {
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://ubuntu.com/security/notices/USN-6250-1"
        },
        {
          "tags": [
            "issue-tracking"
          ],
          "url": "https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-2640"
        },
        {
          "tags": [
            "technical-description"
          ],
          "url": "https://wiz.io/blog/ubuntu-overlayfs-vulnerability"
        },
        {
          "tags": [
            "mailing-list"
          ],
          "url": "https://lists.ubuntu.com/archives/kernel-team/2023-July/140923.html"
        }
      ],
      "workarounds": [
        {
          "lang": "en",
          "value": "If not needed, disable the ability for unprivileged users\nto create namespaces. To do this temporarily, do:\n  sudo sysctl -w kernel.unprivileged_userns_clone=0\nTo disable across reboots, do:\n  echo kernel.unprivileged_userns_clone=0 | \\\n  sudo tee /etc/sysctl.d/99-disable-unpriv-userns.conf"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "cc1ad9ee-3454-478d-9317-d3e869d708bc",
    "assignerShortName": "canonical",
    "cveId": "CVE-2023-2640",
    "datePublished": "2023-07-26T01:59:23.543Z",
    "dateReserved": "2023-05-10T21:23:35.226Z",
    "dateUpdated": "2024-10-23T14:59:17.779Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

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