github - ghsa-69p6-gp5x-j269

ghsa-69p6-gp5x-j269

Vulnerability from github

Published

2024-07-25 21:31

Modified

2024-11-18 16:26

Severity ?

4.8 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:L
2.4 (Low) - CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N

Summary

snapd failed to properly check the destination of symbolic links when extracting a snap

Details

In snapd versions prior to 2.62, snapd failed to properly check the destination of symbolic links when extracting a snap. The snap format is a squashfs file-system image and so can contain symbolic links and other file types. Various file entries within the snap squashfs image (such as icons and desktop files etc) are directly read by snapd when it is extracted. An attacker who could convince a user to install a malicious snap which contained symbolic links at these paths could then cause snapd to write out the contents of the symbolic link destination into a world-readable directory. This in-turn could allow an unprivileged user to gain access to privileged information.

Show details on source website

JSON

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{
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/snapcore/snapd"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.62"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2024-29069"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-59",
      "CWE-610"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2024-07-26T16:39:29Z",
    "nvd_published_at": "2024-07-25T20:15:04Z",
    "severity": "LOW"
  },
  "details": "In snapd versions prior to 2.62, snapd failed to properly check the destination of symbolic links when extracting a snap. The snap format is a squashfs file-system image and so can contain symbolic links and other file types. Various file entries within the snap squashfs image (such as icons and desktop files etc) are directly read by snapd when it is extracted. An attacker who could convince a user to install a malicious snap which contained symbolic links at these paths could then cause snapd to write out the contents of the symbolic link destination into a world-readable directory. This in-turn could allow an unprivileged user to gain access to privileged information.",
  "id": "GHSA-69p6-gp5x-j269",
  "modified": "2024-11-18T16:26:55Z",
  "published": "2024-07-25T21:31:20Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-29069"
    },
    {
      "type": "WEB",
      "url": "https://github.com/snapcore/snapd/pull/13682"
    },
    {
      "type": "WEB",
      "url": "https://github.com/snapcore/snapd/commit/b66fee81606a1c05f965a876ccbaf44174194063"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/snapcore/snapd"
    },
    {
      "type": "WEB",
      "url": "https://pkg.go.dev/vuln/GO-2024-3009"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:L",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "snapd failed to properly check the destination of symbolic links when extracting a snap"
}

cve-2024-29069

Vulnerability from cvelistv5

Published

2024-07-25 19:39

Modified

2024-08-02 01:03

Severity ?

4.8 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:L

Summary

References

▼	URL	Tags
	https://github.com/snapcore/snapd/pull/13682

Impacted products

Vendor

Product

Version

▼

Canonical

snapd

Version: 0 < 2.62

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2024-29069",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-07-26T13:27:42.541639Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-07-26T13:27:49.253Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-02T01:03:51.700Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://github.com/snapcore/snapd/pull/13682"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "modules": [
            "squashfs"
          ],
          "packageName": "snapd",
          "platforms": [
            "Linux"
          ],
          "product": "snapd",
          "programFiles": [
            "snap/container.go",
            "snap/snapdir/snapdir.go",
            "snap/squashfs/squashfs.go"
          ],
          "repo": "https://github.com/snapcore/snapd/",
          "vendor": "Canonical",
          "versions": [
            {
              "lessThan": "2.62",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Zeyad Gouda"
        }
      ],
      "datePublic": "2024-03-14T13:47:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "In snapd versions prior to 2.62, snapd failed to properly check the\ndestination of symbolic links when extracting a snap. The snap format \nis a squashfs file-system image and so can contain symbolic links and\nother file types. Various file entries within the snap squashfs image\n(such as icons and desktop files etc) are directly read by snapd when\nit is extracted. An attacker who could convince a user to install a\nmalicious snap which contained symbolic links at these paths could then \ncause snapd to write out the contents of the symbolic link destination\ninto a world-readable directory. This in-turn could allow an unprivileged\nuser to gain access to privileged information."
        }
      ],
      "impacts": [
        {
          "capecId": "CAPEC-132",
          "descriptions": [
            {
              "lang": "en",
              "value": "CAPEC-132 Symlink Attack"
            }
          ]
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "LOW",
            "baseScore": 4.8,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:L",
            "version": "3.1"
          },
          "format": "CVSS"
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-610",
              "description": "CWE-610 Externally Controlled Reference to a Resource in Another Sphere",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-07-25T19:39:41.050Z",
        "orgId": "cc1ad9ee-3454-478d-9317-d3e869d708bc",
        "shortName": "canonical"
      },
      "references": [
        {
          "url": "https://github.com/snapcore/snapd/pull/13682"
        }
      ],
      "title": "snapd will follow archived symlinks when unpacking a filesystem"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "cc1ad9ee-3454-478d-9317-d3e869d708bc",
    "assignerShortName": "canonical",
    "cveId": "CVE-2024-29069",
    "datePublished": "2024-07-25T19:39:41.050Z",
    "dateReserved": "2024-03-14T23:09:12.771Z",
    "dateUpdated": "2024-08-02T01:03:51.700Z",
    "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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